Document:

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                                                                EXHIBIT 10.13

                                 BUY.COM INC.
                       1999 EMPLOYEE STOCK PURCHASE PLAN
                       ---------------------------------

      I.  PURPOSE OF THE PLAN

          This Employee Stock Purchase Plan is intended to promote the interests
of BUY.COM Inc., a Delaware corporation, by providing eligible employees with
the opportunity to acquire a proprietary interest in the Corporation through
participation in a payroll deduction-based employee stock purchase plan designed
to qualify under Section 423 of the Code.

          Capitalized terms herein shall have the meanings assigned to such
terms in the attached Appendix.

     II.  ADMINISTRATION OF THE PLAN

          The Plan Administrator shall have full authority to interpret and
construe any provision of the Plan and to adopt such rules and regulations for
administering the Plan as it may deem necessary in order to comply with the
requirements of Code Section 423.  Decisions of the Plan Administrator shall be
final and binding on all parties having an interest in the Plan.

     III. STOCK SUBJECT TO PLAN

          A. The stock purchasable under the Plan shall be shares of authorized
but unissued or reacquired Common Stock, including shares of Common Stock
purchased on the open market. The number of shares of Common Stock initially
reserved for issuance over the term of the Plan shall be limited to one million
two hundred fifty thousand (1,250,000) shares./1/

          B. The number of shares of Common Stock available for issuance under
the Plan shall automatically increase on the first trading day of January each
calendar year during the term of the Plan, beginning with calendar year 2001, by
an amount equal to one percent (1%) of the total number of shares of Common
Stock outstanding on the last trading day in December of the immediately
preceding calendar year, but in no event shall any such annual increase exceed
one million three hundred thousand (1,300,000) shares.

          C. Should any change be made to the Common Stock by reason of any
stock split, stock dividend, recapitalization, combination of shares, exchange
of shares or other change affecting the outstanding Common Stock as a class
without the Corporation's receipt of consideration, appropriate adjustments
shall be made to (i) the maximum number and class of securities issuable under
the Plan, (ii) the maximum number and class of securities purchasable per
Participant on any one Purchase Date, (iii) the maximum number and class of
securities purchasable in total by all Participants on any one Purchase Date,
(iv) the maximum number

_____________________________

/1/ All numbers in this document reflect the eight (8)-to-five (5) reverse stock
    split to be effected by the Board of Directors prior to the Plan Effective
    Date.
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and/or class of securities by which the share reserve is to increase
automatically each calendar year pursuant to the provisions of Section III.B of
this Article One and (v) the number and class of securities and the price per
share in effect under each outstanding purchase right in order to prevent the
dilution or enlargement of benefits thereunder.

     IV.  OFFERING PERIODS

          A. Shares of Common Stock shall be offered for purchase under the Plan
through a series of successive offering periods until such time as (i) the
maximum number of shares of Common Stock available for issuance under the Plan
shall have been purchased or (ii) the Plan shall have been sooner terminated.

          B. Each offering period shall be of such duration (not to exceed
twenty-four (24) months) as determined by the Plan Administrator prior to the
start date of such offering period. However, the initial offering period shall
commence at the Effective Time and terminate on the last business day in January
2002. The next offering period shall commence on the first business day in
February 2002, and subsequent offering periods shall commence as designated by
the Plan Administrator.

          C. Each offering period shall consist of a series of one or more
successive Purchase Intervals. Purchase Intervals shall run from the first
business day in February to the last business day in July each year and from the
first business day in August each year to the last business day in January in
the following year. However, the first Purchase Interval in effect under the
initial offering period shall commence at the Effective Time and terminate on
the last business day in July 2000.

          D. Should the Fair Market Value per share of Common Stock on any
Purchase Date within an offering period be less than the Fair Market Value per
share of Common Stock on the start date of that offering period, then that
offering period shall automatically terminate immediately after the purchase of
shares of Common Stock on such Purchase Date, and a new offering period shall
commence on the next business day following such Purchase Date. The new offering
period shall have a duration of twenty (24) months, unless a shorter duration is
established by the Plan Administrator within five (5) business days following
the start date of that offering period.

     V.   ELIGIBILITY

          A. Each individual who is an Eligible Employee on the start date of
any offering period under the Plan may enter that offering period on such start
date or on any subsequent Semi-Annual Entry Date within that offering period,
provided he or she remains an Eligible Employee.

          B. Each individual who first becomes an Eligible Employee after the
start date of an offering period may enter that offering period on any
subsequent Semi-Annual Entry Date within that offering period on which he or she
is an Eligible Employee.

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          C. The date an individual enters an offering period shall be
designated his or her Entry Date for purposes of that offering period.

          D. To participate in the Plan for a particular offering period, the
Eligible Employee must complete the enrollment forms prescribed by the Plan
Administrator (including a stock purchase agreement and a payroll deduction
authorization) and file such forms with the Plan Administrator (or its
designate) on or before his or her scheduled Entry Date.

     VI.  PAYROLL DEDUCTIONS

          A. The payroll deduction authorized by the Participant for purposes of
acquiring shares of Common Stock during an offering period may be any multiple
of one percent (1%) of the Cash Earnings paid to the Participant during each
Purchase Interval within that offering period, up to a maximum of the lesser of
i) ten percent (10%) or ii) ten thousand dollars ($10,000) per calendar year.
The deduction rate so authorized shall continue in effect throughout the
offering period, except to the extent such rate is changed in accordance with
the following guidelines:

             (i) The Participant may, at any time during the offering period,
     reduce his or her rate of payroll deduction to become effective as soon as
     possible after filing the appropriate form with the Plan Administrator. The
     Participant may not, however, effect more than one (1) such reduction per
     Purchase Interval.

             (ii) The Participant may, prior to the commencement of any new
     Purchase Interval within the offering period, increase the rate of his or
     her payroll deduction by filing the appropriate form with the Plan
     Administrator. The new rate (which may not exceed the ten percent (10%)
     maximum) shall become effective on the start date of the first Purchase
     Interval following the filing of such form.

          B. Payroll deductions shall begin on the first pay day
administratively feasible following the Participant's Entry Date into the
offering period and shall (unless sooner terminated by the Participant) continue
through the pay day ending with or immediately prior to the last day of that
offering period. The amounts so collected shall be credited to the Participant's
book account under the Plan, but no interest shall be paid on the balance from
time to time outstanding in such account. The amounts collected from the
Participant shall not be required to be held in any segregated account or trust
fund and may be commingled with the general assets of the Corporation and used
for general corporate purposes.

          C. Payroll deductions shall automatically cease upon the termination
of the Participant's purchase right in accordance with the provisions of the
Plan.

          D. The Participant's acquisition of Common Stock under the Plan on any
Purchase Date shall neither limit nor require the Participant's acquisition of
Common Stock on any subsequent Purchase Date, whether within the same or a
different offering period.

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     VII. PURCHASE RIGHTS

          A. Grant of Purchase Rights. A Participant shall be granted a
             ------------------------
 separate purchase right for each offering period in which he or she
 participates. The purchase right shall be granted on the Participant's Entry
 Date into the offering period and shall provide the Participant with the right
 to purchase shares of Common Stock, in a series of successive installments over
 the remainder of such offering period, upon the terms set forth below. The
 Participant shall execute a stock purchase agreement embodying such terms and
 such other provisions (not inconsistent with the Plan) as the Plan
 Administrator may deem advisable.

          Under no circumstances shall purchase rights be granted under the Plan
to any Eligible Employee if such individual would, immediately after the grant,
own (within the meaning of Code Section 424(d)) or hold outstanding options or
other rights to purchase, stock possessing five percent (5%) or more of the
total combined voting power or value of all classes of stock of the Corporation
or any Corporate Affiliate.

          B. Exercise of the Purchase Right. Each purchase right shall be
             ------------------------------
automatically exercised in installments on each successive Purchase Date within
the offering period, and shares of Common Stock shall accordingly be purchased
on behalf of each Participant on each such Purchase Date. The purchase shall be
effected by applying the Participant's payroll deductions for the Purchase
Interval ending on such Purchase Date to the purchase of whole shares of Common
Stock at the purchase price in effect for the Participant for that Purchase
Date.

          C. Purchase Price. The purchase price per share at which Common Stock
             --------------
will be purchased on the Participant's behalf on each Purchase Date within the
offering period shall be equal to eighty-five percent (85%) of the lower of (i)
the Fair Market Value per share of Common Stock on the Participant's Entry Date
into that offering period or (ii) the Fair Market Value per share of Common
Stock on that Purchase Date.

          D. Number of Purchasable Shares. The number of shares of Common Stock
             ----------------------------
purchasable by a Participant on each Purchase Date during the offering period
shall be the number of whole shares obtained by dividing the amount collected
from the Participant through payroll deductions during the Purchase Interval
ending with that Purchase Date by the purchase price in effect for the
Participant for that Purchase Date.  However, the maximum number of shares of
Common Stock purchasable per Participant on any one Purchase Date shall not
exceed 550 shares, subject to periodic adjustments in the event of certain
changes in the Corporation's capitalization.  In addition, the maximum number of
shares of Common Stock purchasable in total by all Participants on any one
Purchase Date shall not exceed 312,500 shares, subject to periodic adjustments
in the event of certain changes in the Corporation's capitalization.  However,
the Plan Administrator shall have the discretionary authority, exercisable prior
to the start of any offering period under the Plan, to increase or decrease the
limitations to be in effect for the number of shares purchasable per Participant
and in total by all Participants on each Purchase Date during that offering
period.

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          E. Excess Payroll Deductions.  Any payroll deductions not applied to
             -------------------------
the purchase of shares of Common Stock on any Purchase Date because they are not
sufficient to purchase a whole share of Common Stock shall be held for the
purchase of Common Stock on the next Purchase Date. However, any payroll
deductions not applied to the purchase of Common Stock by reason of the
limitation on the maximum number of shares purchasable per Participant or in
total by all Participants on the Purchase Date shall be promptly refunded.

          F. Termination of Purchase Right.  The following provisions shall
             -----------------------------
govern the termination of outstanding purchase rights:

             (i)   A Participant may, at any time prior to the next scheduled
     Purchase Date in the offering period, terminate his or her outstanding
     purchase right by filing the appropriate form with the Plan Administrator
     (or its designate), and no further payroll deductions shall be collected
     from the Participant with respect to the terminated purchase right. Any
     payroll deductions collected during the Purchase Interval in which such
     termination occurs shall, at the Participant's election, be immediately
     refunded or held for the purchase of shares on the next Purchase Date. If
     no such election is made at the time such purchase right is terminated,
     then the payroll deductions collected with respect to the terminated right
     shall be refunded as soon as possible.

             (ii)  The termination of such purchase right shall be irrevocable,
     and the Participant may not subsequently rejoin the offering period for
     which the terminated purchase right was granted. In order to resume
     participation in any subsequent offering period, such individual must re-
     enroll in the Plan (by making a timely filing of the prescribed enrollment
     forms) on or before his or her scheduled Entry Date into that offering
     period.

             (iii) Should the Participant cease to remain an Eligible Employee
for any reason (including death, disability or change in status) while his or
her purchase right remains outstanding, then that purchase right shall
immediately terminate, and all of the Participant's payroll deductions for the
Purchase Interval in which the purchase right so terminates shall be immediately
refunded. However, should the Participant cease to remain in active service by
reason of an approved unpaid leave of absence, then the Participant shall have
the right, exercisable up until the last business day of the Purchase Interval
in which such leave commences, to (a) withdraw all the payroll deductions
collected to date on his or her behalf for that Purchase Interval or (b) have
such funds held for the purchase of shares on his or her behalf on the next
scheduled Purchase Date. In no event, however, shall any further payroll
deductions be collected on the Participant's behalf during such leave. Upon the
Participant's return to active service (x) within ninety (90) days following the
commencement of such leave or (y) prior to the expiration of any longer period
for which such Participant's right to reemployment with the Corporation is
guaranteed by statute or contract, his or her payroll deductions under the Plan
shall automatically resume at the rate in

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effect at the time the leave began, unless the Participant withdraws from the
Plan prior to his or her return. An individual who returns to active employment
following a leave of absence that exceeds in duration the applicable (x) or (y)
time period will be treated as a new Employee for purposes of subsequent
participation in the Plan and must accordingly re-enroll in the Plan (by making
a timely filing of the prescribed enrollment forms) on or before his or her
scheduled Entry Date into the offering period.

          G. Change in Control. Each outstanding purchase right shall
             -----------------
automatically be exercised, immediately prior to the effective date of any
Change in Control, by applying the payroll deductions of each Participant for
the Purchase Interval in which such Change in Control occurs to the purchase of
whole shares of Common Stock at a purchase price per share equal to eighty-five
percent (85%) of the lower of (i) the Fair Market Value per share of Common
Stock on the Participant's Entry Date into the offering period in which such
Change in Control occurs or (ii) the Fair Market Value per share of Common Stock
immediately prior to the effective date of such Change in Control. However, the
applicable limitation on the number of shares of Common Stock purchasable per
Participant shall continue to apply to any such purchase, but not the limitation
applicable to the maximum number of shares of Common Stock purchasable in total
by all Participants on any one Purchase Date.

          The Corporation shall use its best efforts to provide at least ten
(10) days' prior written notice of the occurrence of any Change in Control, and
Participants shall, following the receipt of such notice, have the right to
terminate their outstanding purchase rights prior to the effective date of the
Change in Control.

          H. Proration of Purchase Rights. Should the total number of shares of
             ----------------------------
Common Stock to be purchased pursuant to outstanding purchase rights on any
particular date exceed the number of shares then available for issuance under
the Plan, the Plan Administrator shall make a pro-rata allocation of the
available shares on a uniform and nondiscriminatory basis, and the payroll
deductions of each Participant, to the extent in excess of the aggregate
purchase price payable for the Common Stock pro-rated to such individual, shall
be refunded.

          I. Assignability. The purchase right shall be exercisable only by the
             -------------
Participant and shall not be assignable or transferable by the Participant.

          J. Stockholder Rights. A Participant shall have no stockholder rights
             ------------------
with respect to the shares subject to his or her outstanding purchase right
until the shares are purchased on the Participant's behalf in accordance with
the provisions of the Plan and the Participant has become a holder of record of
the purchased shares.

    VIII. ACCRUAL LIMITATIONS

          A. No Participant shall be entitled to accrue rights to acquire Common
Stock pursuant to any purchase right outstanding under this Plan if and to the
extent such accrual, when aggregated with (i) rights to purchase Common Stock
accrued under any other purchase right granted under this Plan and (ii) similar
rights accured under other employee stock purchase plans

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(within the meaning of Code Section 423)) of the Corporation or any Corporate
Affiliate, would otherwise permit such Participant to purchase more than Twenty-
Five Thousand Dollars ($25,000.00) worth of stock of the Corporation or any
Corporate Affiliate (determined on the basis of the Fair Market Value per share
on the date or dates such rights are granted) for each calendar year such rights
are at any time outstanding.

          B. For purposes of applying such accrual limitations to the purchase
rights granted under the Plan, the following provisions shall be in effect:

             (i)  The right to acquire Common Stock under each outstanding
     purchase right shall accrue in a series of installments on each successive
     Purchase Date during the offering period on which such right remains
     outstanding.

             (ii) No right to acquire Common Stock under any outstanding
     purchase right shall accrue to the extent the Participant has already
     accrued in the same calendar year the right to acquire Common Stock under
     one or more other purchase rights at a rate equal to Twenty-Five Thousand
     Dollars ($25,000.00) worth of Common Stock (determined on the basis of the
     Fair Market Value per share on the date or dates of grant) for each
     calendar year such rights were at any time outstanding.

          C. If by reason of such accrual limitations, any purchase right of a
Participant does not accrue for a particular Purchase Interval, then the payroll
deductions that the Participant made during that Purchase Interval with respect
to such purchase right shall be promptly refunded.

          D. In the event there is any conflict between the provisions of this
Article and one or more provisions of the Plan or any instrument issued
thereunder, the provisions of this Article shall be controlling.

     IX.  EFFECTIVE DATE AND TERM OF THE PLAN

          A. The Plan was adopted by the Board on December 17, 1999, and shall
become effective at the Effective Time, provided no purchase rights granted
under the Plan shall be exercised, and no shares of Common Stock shall be issued
hereunder, until (i) the Plan shall have been approved by the stockholders of
the Corporation and (ii) the Corporation shall have complied with all applicable
requirements of the 1933 Act (including the registration of the shares of Common
Stock issuable under the Plan on a Form S-8 registration statement filed with
the Securities and Exchange Commission), all applicable listing requirements of
any stock exchange (or the Nasdaq National Market, if applicable) on which the
Common Stock is listed for trading and all other applicable requirements
established by law or regulation. In the event such stockholder approval is not
obtained, or such compliance is not effected, within twelve (12) months after
the date on which the Plan is adopted by the Board, the Plan shall terminate and
have no further force or effect, and all sums collected from Participants during
the initial offering period hereunder shall be refunded.

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          B. Unless sooner terminated by the Board, the Plan shall terminate
upon the earliest of (i) the last business day in January 2010, (ii) the date on
which all shares available for issuance under the Plan shall have been sold
pursuant to purchase rights exercised under the Plan or (iii) the date on which
all purchase rights are exercised in connection with a Change in Control. No
further purchase rights shall be granted or exercised, and no further payroll
deductions shall be collected, under the Plan following such termination.

     X.   AMENDMENT OF THE PLAN

          A. The Board may alter, amend, suspend or terminate the Plan at any
time to become effective immediately following the close of any Purchase
Interval. However, the Plan may be amended or terminated immediately upon Board
action, if and to the extent necessary to assure that the Corporation will not
recognize, for financial reporting purposes, any compensation expense in
connection with the shares of Common Stock offered for purchase under the Plan,
should the financial accounting rules applicable to the Plan at the Effective
Time be subsequently revised so as to require the Corporation to recognize
compensation expense in the absence of such amendment or termination.

          B. In no event may the Board effect any of the following amendments or
revisions to the Plan without the approval of the Corporation's stockholders:
(i) increase the number of shares of Common Stock issuable under the Plan,
except for permissible adjustments in the event of certain changes in the
Corporation's capitalization, (ii) alter the purchase price formula so as to
reduce the purchase price payable for the shares of Common Stock purchasable
under the Plan or (iii) modify the eligibility requirements for participation in
the Plan.

     XI.  GENERAL PROVISIONS

          A. All costs and expenses incurred in the administration of the Plan
shall be paid by the Corporation; however, each Plan Participant shall bear all
costs and expenses incurred by such individual in the sale or other disposition
of any shares purchased under the Plan.

          B. Nothing in the Plan shall confer upon the Participant any right to
continue in the employ of the Corporation or any Corporate Affiliate for any
period of specific duration or interfere with or otherwise restrict in any way
the rights of the Corporation (or any Corporate Affiliate employing such person)
or of the Participant, which rights are hereby expressly reserved by each, to
terminate such person's employment at any time for any reason, with or without
cause.

          C. The provisions of the Plan shall be governed by the laws of the
State of New York without resort to that State's conflict-of-laws rules.

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                                   Schedule A

                         Corporations Participating in
                          Employee Stock Purchase Plan
                            As of the Effective Time
                            ------------------------

                                  BUY.COM Inc.

<PAGE>

                                    APPENDIX
                                    --------

          The following definitions shall be in effect under the Plan:

          A. Board shall mean the Corporation's Board of Directors.
             -----

          B. Cash Earnings shall mean (i) the regular base salary paid to a
             -------------
Participant by one or more Participating Companies during such individual's
period of participation in one or more offering periods under the Plan plus (ii)
all overtime payments, bonuses, commissions, profit-sharing distributions and
other incentive-type payments received during such period. Such Cash Earnings
shall be calculated before deduction of (A) any income or employment tax
withholdings or (B) any contributions made by the Participant to any Code
Section 401(k) salary deferral plan or any Code Section 125 cafeteria benefit
program now or hereafter established by the Corporation or any Corporate
Affiliate. However, Cash Earnings shall not include any contributions made by
the Corporation or any Corporate Affiliate on the Participant's behalf to any
employee benefit or welfare plan now or hereafter established (other than Code
Section 401(k) or Code Section 125 contributions deducted from such Cash
Earnings).

          C. Change in Control shall mean a change in ownership of the
             -----------------
Corporation pursuant to any of the following transactions:

             (i) a merger or consolidation in which securities possessing more
     than fifty percent (50%) of the total combined voting power of the
     Corporation's outstanding securities are transferred to a person or persons
     different from the persons holding those securities immediately prior to
     such transaction, or

             (ii) the sale, transfer or other disposition of all or
     substantially all of the assets of the Corporation in complete liquidation
     or dissolution of the Corporation, or

             (iii) the acquisition, directly or indirectly, by a person or
related group of persons (other than the Corporation or a person that directly
or indirectly controls, is controlled by or is under common control with the
Corporation) of beneficial ownership (within the meaning of Rule 13d-3 of the
1934 Act) of securities possessing more than fifty percent (50%) of the total
combined voting power of the Corporation's outstanding securities pursuant to a
tender or exchange offer made directly to the Corporation's stockholders.

          D. Code shall mean the Internal Revenue Code of 1986, as amended.
             ----

          E. Common Stock shall mean the Corporation's common stock.
             ------------

                                      A-1
<PAGE>

          F. Corporate Affiliate shall mean any parent or subsidiary corporation
             -------------------
of the Corporation (as determined in accordance with Code Section 424), whether
now existing or subsequently established.

          G. Corporation shall mean BUY.COM Inc., a Delaware corporation, and
             -----------
any corporate successor to all or substantially all of the assets or voting
stock of BUY.COM Inc. that shall by appropriate action adopt the Plan.

          H. Effective Time shall mean the time at which the Underwriting
             --------------
Agreement is executed and the Common Stock priced for the initial public
offering of such Common Stock. Any Corporate Affiliate that becomes a
Participating Corporation after such Effective Time shall designate a subsequent
Effective Time with respect to its employee-Participants.

          I. Eligible Employee shall mean any person who is employed by a
             -----------------
Participating Corporation on a basis under which he or she is regularly expected
to render more than twenty (20) hours of service per week for more than five (5)
months per calendar year for earnings considered wages under Code Section 3401
(a).

          J. Entry Date shall mean the date an Eligible Employee first commences
             ----------
participation in the offering period in effect under the Plan.  The earliest
Entry Date under the Plan shall be the Effective Time.

          K. Fair Market Value per share of Common Stock on any relevant date
             -----------------
shall be determined in accordance with the following provisions:

              (i)   If the Common Stock is at the time traded on the Nasdaq
     National Market, then the Fair Market Value shall be the closing selling
     price per share of Common Stock on the date in question, as such price is
     reported by the National Association of Securities Dealers on the Nasdaq
     National Market. If there is no closing selling price for the Common Stock
     on the date in question, then the Fair Market Value shall be the closing
     selling price on the last preceding date for which such quotation exists.

              (ii)  If the Common Stock is at the time listed on any Stock
     Exchange, then the Fair Market Value shall be the closing selling price per
     share of Common Stock on the date in question on the Stock Exchange
     determined by the Plan Administrator to be the primary market for the
     Common Stock, as such price is officially quoted in the composite tape of
     transactions on such exchange. If there is no closing selling price for the
     Common Stock on the date in question, then the Fair Market Value shall be
     the closing selling price on the last preceding date for which such
     quotation exists.

              (iii) For purposes of the initial offering period that begins at
the Effective Time, the Fair Market Value shall be deemed to be equal to the
price per share at which the Common Stock is sold in the initial public offering
pursuant to the Underwriting Agreement.

                                     A-11
<PAGE>

          L. 1933 Act shall mean the Securities Act of 1933, as amended.
             --------

          M. Participant shall mean any Eligible Employee of a Participating
             -----------
Corporation who is actively participating in the Plan.

          N. Participating Corporation shall mean the Corporation and such
             -------------------------
Corporate Affiliate or Affiliates as may be authorized from time to time by the
Board to extend the benefits of the Plan to their Eligible Employees. The
Participating Corporations in the Plan are listed in attached Schedule A.

          O. Plan shall mean the Corporation's 1999 Employee Stock Purchase
             ----
Plan, as set forth in this document.

          P. Plan Administrator shall mean the committee of two (2) or more
             ------------------
Board members appointed by the Board to administer the Plan.

          Q. Purchase Date shall mean the last business day of each Purchase
             -------------
Interval. The initial Purchase Date shall be July 31, 2000.

          R. Purchase Interval shall mean each successive six (6)-month period
             -----------------
within the offering period at the end of which there shall be purchased shares
of Common Stock on behalf of each Participant.

          S. Semi-Annual Entry Date shall mean the first business day in
             ----------------------
February and August each year on which an Eligible Employee may first enter an
offering period.

          T. Stock Exchange shall mean either the American Stock Exchange or
             --------------
the New York Stock Exchange.

          U. Underwriting Agreement shall mean the agreement between the
             ----------------------
Corporation and the underwriter or underwriters managing the initial public
offering of the Common Stock.

                                     A-12<PAGE>

                                                                   EXHIBIT 10.35

                             BUY.COM TOUR AGREEMENT
                             ----------------------

     THIS AGREEMENT ("Agreement") is made and entered into as of the 25th day of
October, 1999 (the "Effective Date") by and between PGA TOUR, INC., a Maryland
corporation ("TOUR"), and BUY.COM, INC., a Delaware corporation ("BUY.COM").

BACKGROUND FACTS
----------------

A. TOUR is the organization of certain professional tournament golfers of
worldwide stature that, among other things, sanctions and co-sponsors certain
professional golf tournaments (the "PGA TOUR," "SENIOR PGA TOUR" and what is
currently referred to as the "NIKE TOUR").

B. BUY.COM is recognized in the electronic commerce industry.

C. BUY.COM and TOUR desire for BUY.COM to become the umbrella sponsor of the
professional golf circuit currently known as the NIKE TOUR and to have such tour
be renamed the BUY.COM TOUR.

D. Pursuant to the umbrella sponsorship of the BUY.COM TOUR, BUY.COM will
receive certain promotional rights, corporate hospitality benefits and media
exposure, subject to the terms and conditions set forth herein.

RECITAL OF CONSIDERATION
------------------------

   NOW, THEREFORE, in consideration of the mutual promises and covenants
herein contained and for other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, TOUR and BUY.COM hereby agree as
follows:
<PAGE>

AGREEMENT OF THE PARTIES
------------------------

1. ACCURACY OF RECITALS.
   --------------------

   To the best of the parties' knowledge, the statements set forth above in
the section labeled "Background Facts" are true and correct. Neither party is
aware of any fact or circumstance that would render such statements misleading.

2. UMBRELLA SPONSORSHIP.
   --------------------

   2.1  Name.  BUY.COM acknowledges the existence of the professional golf
        ----
circuit owned and operated by TOUR which is currently known as the "NIKE TOUR"
(the "Professional Circuit"). TOUR and BUY.COM hereby agree that as of the
Effective Date, (i) BUY.COM shall become the exclusive umbrella sponsor of the
Professional Circuit, (ii) the Professional Circuit shall be renamed the BUY.COM
TOUR, and (iii) each individual event which is part of the BUY.COM TOUR (each a
"TOUR Event") shall include the BUY.COM name (e.g., BUY.COM Knoxville Open)
(such renamed Professional Circuit shall be referred to herein as the "BUY.COM
TOUR").

   2.2  Exclusivity.  BUY.COM shall have the exclusive right to have its name
        -----------
included in the title of the BUY.COM TOUR and in the title of each TOUR Event.
No other sponsor shall have its name or other identification included in the
name of the BUY.COM TOUR or in the name of any individual TOUR Event; provided
that, BUY.COM acknowledges and agrees TOUR shall have the right to sell other
non-title sponsorships associated with individual or multiple TOUR Events,
including, without limitation, presenting sponsorships (e.g., BUY.COM Knoxville
Open presented by Buick), so long as no such sponsors are "Competitors" (as such
term is defined in Exhibit A attached hereto), or are otherwise harmful to
                   ---------
the image or reputation of BUY.COM.

   2.3  BUY.COM TOUR Operation.  BUY.COM acknowledges and agrees that TOUR
        ----------------------
shall be solely responsible for all aspects of operating the BUY.COM TOUR,
including, without limitation, promulgating and enforcing BUY.COM TOUR
Tournament Regulations; provided that TOUR will solicit BUY.COM's advice and
counsel on all major

                                     Page 2
<PAGE>

elements of the BUY.COM TOUR, including feedback on issues including, but not
limited to, brand positioning, market scheduling, television strategy, and
promotion. Within fourteen (14) days of the Effective Date, a task force from
each party shall be created to oversee the initial transition and branding of
the BUY.COM TOUR. Thereafter during the "Term" (as defined herein), this task
force will meet on a quarterly basis to address various issues associated with
the BUY.COM TOUR. TOUR agrees to explore with BUY.COM the possibility of BUY.COM
selling newly created or existing but unsold sponsorship positions at TOUR
Events so long as any such arrangement results in a net increase in revenue for
the applicable TOUR Event.

   2.4  Events and Markets.
        ------------------

        2.4.1 Number of Events. In 1999, the Professional Circuit consisted of
the thirty (30) annual events listed on Exhibit B. During the Term, the parties
                                        ---------
agree to maintain the BUY.COM TOUR at a quality and number of events that is in
all respects comparable to or better than the 1999 Professional Circuit. TOUR
shall have the right to add new TOUR Events and extend the number of TOUR Events
on the BUY.COM TOUR beyond the current annual schedule of thirty (30), provided
such additional TOUR Events are of comparable or better quality to the events on
the 1999 Professional Circuit. References herein to the BUY.COM TOUR shall
include the thirty (30) TOUR Events on Exhibit B, any successors of such TOUR
                                       ---------
Events, and any new TOUR Events added to the BUY.COM TOUR. TOUR and
BUY.COM shall also analyze the possibility of establishing a number of "marquee"
events on the BUY.COM TOUR (similar to THE PLAYERS CHAMPIONSHIP on the PGA
TOUR). If in any year during the Term the number of TOUR events changes, the
parties agree to follow the procedures set forth on Exhibit C.
                                                    ---------

        2.4.2  Markets.  The parties hereto acknowledge and agree that TOUR
               -------
Events will take place in a wide variety of markets, generally characterized as
"mid-sized," where there is typically not a PGA TOUR or SENIOR PGA TOUR
tournament presence. TOUR will solicit information regarding, and consider
BUY.COM's objectives and desires with respect to, the markets in which the TOUR
Events are placed. Prior to the scheduling of all new TOUR Events, or the
relocation of an existing TOUR Event, TOUR will discuss with BUY.COM all

                                     Page 3
<PAGE>

market options and use commercially reasonable efforts to accommodate BUY.COM's
requests. The parties agree that they will focus their respective efforts
towards adding new TOUR Events of a caliber and quality that are comparable to,
or better than, TOUR Events played on the Professional Circuit in 1999.
Additionally, TOUR shall seek to increase the number of TOUR Events conducted at
Tournament Players Clubs.

             2.4.3  International Market Expansion.  In the event TOUR desires
                    ------------------------------
to expand the BUY.COM TOUR to include TOUR Events outside the United States,
TOUR will so notify BUY.COM in writing pursuant to the procedures set forth in
Exhibit D.
---------

             2.4.4  Purse.  TOUR agrees that during the Term, the purse levels
                    -----
for TOUR Events will be as set forth on Exhibit E.
                                        ---------

        2.5  PGA TOUR Access. TOUR agrees that it will not decrease the number
             ---------------
of opportunities for players on the BUY.COM TOUR to earn the right to play on
the PGA TOUR from the number of opportunities that existed on the 1999
Professional Circuit.

   3.   BUY.COM TOUR MARK.
        -----------------

        3.1  Creation of BUY.COM TOUR Logo.  TOUR and BUY.COM agree that the
             -----------------------------
logo attached hereto as Exhibit F shall be the official logo of the BUY.COM TOUR
                        --------
(the "BUY.COM TOUR Logo"). The BUY.COM TOUR Logo together with the word mark
BUY.COM TOUR shall be collectively referred to herein as the "BUY.COM TOUR
Mark". Neither party shall take any action to register the BUY.COM TOUR Mark
without the prior written approval of the other party.

        3.2  Use of BUY.COM TOUR MARK by TOUR.  During the Term and subject to
             --------------------------------
Sections 8 and 9, TOUR shall have the right to use, and shall use, the BUY.COM
TOUR MARK and/or BUY.COM TOUR name in connection with all activities associated
with the BUY.COM TOUR, including, but not limited to, marketing and media
materials. The parties acknowledge and agree that TOUR shall have the sole and
exclusive right to manufacture,

                                     Page 4
<PAGE>

distribute and sell BUY.COM TOUR merchandise and to allow other third parties to
accomplish these tasks (the "Merchandise"), and TOUR shall be entitled to retain
all revenue associated therewith; provided that (i) BUY.COM shall have the sole
and exclusive right to conduct all e-commerce sales or distribution of the
Merchandise, and to retain all revenues associated therewith, and (ii) TOUR
shall consider from time to time requests from BUY.COM to source Merchandise
through third party vendors, if such vendors can produce Merchandise of equal
quality at a lower price. In addition, TOUR shall make the Merchandise available
to BUY.COM, at prices equal to TOUR's cost for such merchandise, for electronic
distribution by BUY.COM. TOUR agrees that BUY.COM shall have a limited right to
sell Merchandise other than through on-line sales, subject to TOUR approval.
TOUR agrees that all uses of BUY.COM TOUR Mark outside the promotion and
sponsorship by BUY.COM TOUR or other than as expressly provided in this
Agreement shall be subject to BUY.COM's prior written approval.

        3.3  Rebranding Program.  TOUR shall implement a rebranding campaign,
             ------------------
regarding the BUY.COM TOUR and the BUY.COM TOUR MARK, the specifics of which are
attached hereto as Exhibit G.  As part of this rebranding effort, TOUR shall
                   ---------
create a new television institutional advertisement regarding the new BUY.COM
TOUR to be broadcast in a variety of TOUR television vehicles at TOUR's expense.
The schedule for television and other media spots for the first quarter of 2000
is also set forth on Exhibit G. Additionally, TOUR shall work closely with its
                     ---------
broadcast rights holders to ensure continued and correct usage of
in-program graphics, announcer mentions, leaderboard signage, and on-course
signage related to BUY.COM TOUR Events, players, and alumni, at TOUR's expense.

        3.4  Quality of Operation.  The parties acknowledge the goodwill which
             --------------------
TOUR and BUY.COM will develop in connection with the BUY.COM TOUR MARK.
Accordingly, the parties agree that each will not knowingly nor intentionally
take any actions which could adversely affect such goodwill as developed by TOUR
and BUY.COM.

        3.5  Quality Control.  All promotional or advertising material
             ---------------
containing the BUY.COM TOUR MARK shall be of a high quality that does not
derogate from or adversely affect the BUY.COM TOUR MARK or the goodwill and
reputation associated therewith.

                                     Page 5
<PAGE>

        3.6  Termination.  The parties acknowledge and agree that upon the
             -----------
expiration or the earlier termination of this Agreement for any reason, neither
party shall use the BUY.COM TOUR MARK in any manner (except by TOUR for
historical references to statistics, events, etc.).

   4.   MEDIA EXPOSURE.
        --------------

        4.1  BUY.COM TOUR Event Telecasts.  BUY.COM acknowledges that under
             ----------------------------
TOUR's current television agreements, which are in effect through the year 2002,
The Golf Channel has the exclusive rights to all TOUR Events, with a minimum
obligation to provide broadcast coverage of ten (10) TOUR Events annually, with
the season-ending BUY.COM TOUR Championship carried on The Golf Channel and Fox
Sports Net. The parties acknowledge that television coverage for the BUY.COM
TOUR after 2002 will be subject to new broadcast television agreements, which
will be negotiated by TOUR in 2001; provided that TOUR shall consult with
BUY.COM regarding ongoing negotiations and discussions for such television
coverage. TOUR will use its commercially reasonable best efforts in these
negotiations to maintain comparable, if not gain increased coverage of, the TOUR
Events. BUY.COM shall have the option to purchase advertising units within the
BUY.COM TOUR Event telecasts subject to the mutual agreement of BUY.COM and the
applicable broadcaster.

        4.2  Updates in PGA TOUR and SENIOR PGA TOUR Telecasts.  BUY.COM
             -------------------------------------------------
acknowledges that TOUR's current PGA TOUR television contracts and practice are
in effect through 2002 and SENIOR PGA TOUR television contracts and practice are
in effect through 2000. These existing television contracts provide for the
BUY.COM TOUR to receive event updates and upcoming event promotions in the
television coverage during most every PGA TOUR and SENIOR PGA TOUR event
throughout the year as set forth on Exhibit H.
                                    ---------

        4.3  International Television.  The television broadcasts that provide
             ------------------------
BUY.COM TOUR exposure through updates and promotions within PGA TOUR and SENIOR
PGA TOUR telecasts referenced in Section 4.2 above will continue to be
distributed

                                     Page 6
<PAGE>

internationally via TOUR's international television agreements. During the Term,
TOUR will ensure that this international exposure will continue for the term of
those agreements and any extensions, renewals or successor agreements. In
addition, TOUR will provide for such continued international exposure during the
Term by entering into new contracts, extensions or renewals of such
international television agreements.

        4.4  PGA TOUR.COM Exposure.  TOUR shall ensure that the BUY.COM TOUR
             ---------------------
MARK will receive prominent, above-the-fold exposure on the PGATOUR.com web site
(and any successor web site) (the "TOUR Site") during the Term, including,
without limitation, BUY.COM TOUR MARK utilization on the home page of the TOUR
Site; BUY.COM TOUR MARK utilization on all BUY.COM TOUR player biography,
statistics and tournament pages; BUY.COM TOUR MARK utilization on the BUY.COM
TOUR's live scoring pages; and BUY.COM TOUR MARK or name utilization in
substantial BUY.COM TOUR editorial features and/or promotions undertaken on the
TOUR Site. The BUY.COM TOUR MARK will be a hot link to the home page of the
BUY.COM TOUR section of the TOUR Site and TOUR and BUY.COM will establish a
mutually acceptable reciprocal, above the fold link between such page and
BUY.COM's web site.

        4.5  TOUR Media.  TOUR agrees that the BUY.COM TOUR will be featured
             ----------
prominently in all TOUR owned and/or controlled media that may exist at any time
during the Term, which currently includes the "Inside the PGA TOUR" and "Inside
the SENIOR PGA TOUR" television shows, "PGA TOUR Partners Magazine," the annual
TOUR Magazine insert in "Golf Magazine," and TOUR Media Guides and applicable
press releases. During the Term in any TOUR media where there is currently a
feature referring to NIKE TOUR, that feature will reference the BUY.COM TOUR,
including, without limitation, all of the "Inside the PGA TOUR" and "Inside the
SENIOR PGA TOUR" television shows which currently feature NIKE TOUR recaps
and/or promotions, shall continue as BUY.COM TOUR recaps and/or promotions
during the Term.

        4.6  Earned Media.  The BUY.COM TOUR will receive significant national
             ------------
and local media exposure through both television and print media during the
course of the

                                     Page 7
<PAGE>

BUY.COM TOUR's editorial and news coverage by third parties. TOUR will develop a
transitional rebranding campaign to be launched no later than January 1, 2000
for the media to editorially ingrain BUY.COM's position as the new umbrella
title sponsor.

        4.7  Media Value.   As set forth in this Section 4, certain facets of
             -----------
future BUY.COM TOUR media exposure are subject to future negotiations between
TOUR and third parties. The parties acknowledge and agree that the maintenance
and expansion of such media exposure is in their mutual best interests. TOUR
shall use its commercially reasonable best efforts to obtain comparable or
superior media value for the BUY.COM TOUR. In the event TOUR is unable to
provide comparable media value, TOUR will provide additional, comparable
exposure or value from its other media inventory. In the event TOUR is unable to
provide such additional value, TOUR shall provide an appropriate reduction in
the "Sponsorship Fee" (as defined herein), which shall be mutually agreed upon
by the parties.

   5.   ON-SITE EXPOSURE.
        ----------------

        5.1  BUY.COM TOUR Tournament Elements.  TOUR will place the BUY.COM TOUR
             --------------------------------
MARK prominently on all publications, merchandise, advertising and other
marketing elements associated with each individual TOUR Event, and TOUR will
place the BUY.COM TOUR MARK on the electronic scoreboards, tournament signage,
tickets, publications, pairing sheets, caddie vests, hole flags and volunteer
uniforms for each TOUR Event. TOUR will use commercially reasonable best efforts
to use the BUY.COM TOUR MARK on concessions cups and the like.

        5.2  Additional On-Site Opportunities.  At BUY.COM's election and
             --------------------------------
expense, BUY.COM shall have the right to showcase its products and services at
individual TOUR Event venues (including, without limitation, the opportunity to
present a BUY.COM TOUR on-line store via kiosks to tournament fans, on-site
coupon distribution, product sampling, etc. ). BUY.COM will choose the size and
location of such display areas (minimum size of 10' x 10'), subject to TOUR's
approval which shall not be unreasonably withheld.

                                     Page 8
<PAGE>

   6.   ADDITIONAL PROMOTIONAL VALUE FOR BUY.COM.
        ----------------------------------------

        6.1  Tickets.  Each year during the Term, BUY.COM will receive two
             -------
hundred (200) grounds credentials for each TOUR Event at no cost to BUY.COM. In
addition, each year during the Term, BUY.COM will receive, at no cost to
BUY.COM, an aggregate of two hundred (200) tournament credentials (each such
credential providing access to a tournament for one (1) week) for use at PGA
TOUR Events and SENIOR PGA TOUR Events. No more than one hundred twenty (120)
such credentials may be used on any one (1) TOUR, and no more than ten (10)
tickets may be used at any one (1) event. Additional credentials will be
provided through TOUR at the price paid by TOUR for such credentials.

        6.2  Pro-Am Spots.  Each year during the Term, BUY.COM will receive, at
             ------------
no cost, twelve (12) Pro-Am spots in the Official Wednesday Pro-Am of each TOUR
Event. BUY.COM may use its Pro-Am spots for any amateur player of reasonable
capability, at the discretion of BUY.COM. In addition, each year during the
Term, BUY.COM will receive an aggregate of four (4) Pro-Am spots on each of the
PGA TOUR and SENIOR PGA TOUR. Selection of such Pro-Am spots will be determined
by TOUR, after consultation with BUY.COM, provided that TOUR shall provide such
Pro-Am spots in at least two different events on each of the PGA TOUR and SENIOR
PGA TOUR. BUY.COM may purchase additional Pro-Am spots, subject to availability,
at the price paid by TOUR for such additional Pro-Am spots.

        6.3  TPC Club Membership.  At no cost to BUY.COM, BUY.COM will receive
             -------------------
one (1) corporate membership to the Tournament Players Club network providing
two (2) designees at any one (1) time who will be entitled to full membership
privileges at the Tournament Players Club at Sawgrass. Such membership
privileges shall permit the designees to play golf at the Tournament Players
Club at Sawgrass without the payment of initiation fees, annual membership fees
or greens fees and also allow the use of locker room facilities. The designees
may also bring or send guests to other Tournament Players Club facilities
worldwide, subject to the Bylaws of the Tournament Players Club at Sawgrass and
each other Tournament Players Club. Such corporate membership shall
automatically terminate and be deemed revoked

                                     Page 9
<PAGE>

as of the expiration or earlier termination of the Term. BUY.COM shall have the
right to change the designees upon thirty (30) days written notice to TOUR.

        6.4  Client Functions.  Each year during the Term, TOUR shall invite
             ----------------
        certain BUY.COM executives, at the discretion of TOUR, to TOUR's annual
client functions, so long as such functions remain in existence. The location
and activities of the client functions may change each year, but provide an
opportunity for networking with other TOUR sponsors.

        6.5  BUY.COM Hospitality.  Each year during the Term, TOUR shall provide
             -------------------
BUY.COM, at no cost, with an 18th hole hospitality tent or skybox (generally for
groups of fifty (50) including Clubhouse credentials with VIP access (or similar
hospitality)) at each BUY.COM TOUR Event. The specifics of each package is to be
determined by TOUR. Food and beverage for such hospitality area shall be at
BUY.COM's expense. BUY.COM may, from time to time, and subject to TOUR approval,
transfer or resell its hospitality inventory, BUY.COM pro-am spots and/or TOUR
Event tickets to third parties, so long as such sales or transfers do not
adversely affect the applicable TOUR Event's sales of similar items.

        6.6  World Golf Championships Hospitality.  Each year during the Term,
             ------------------------------------
and at no cost to BUY.COM, TOUR shall provide BUY.COM an Embassy Row Hospitality
Tent (inclusive of food, beverages and forty (40) admission passes for each of
the following three (3) days (Wednesday, Friday and Sunday)) at the World Golf
Championships Andersen Consulting Match Play Championship in Carlsbad,
California, for so long as that event shall continue to be played in Carlsbad
during the Term. If the tournament is not played in Carlsbad, California, TOUR
will provide comparable hospitality at a mutually acceptable alternative PGA
TOUR event.

   7.  CONSUMER PROMOTIONAL PROGRAMS.  BUY.COM shall have the right to conduct
       -----------------------------
consumer promotions around a BUY.COM TOUR theme, including print, radio,
television and Internet advertising. These promotions may include hospitality or
ticket giveaways, sweepstakes opportunities, etc. (all in accordance with
existing TOUR policies that have been previously provided to BUY.COM and all
applicable laws). All such promotions are

                                    Page 10
<PAGE>

subject to TOUR's prior approval, such approval not to be unreasonably withheld.
BUY.COM shall also have the right to use the designation "Official Online
Superstore of the PGA TOUR", or such other designation that is mutually agreed
upon by TOUR and BUY.COM (the "Designation") solely in conjunction with the
BUY.COM brand. Use of the Designation shall be subject to a separate mutually
acceptable license agreement.

   8.  USE OF BUY.COM MARKS.
       --------------------

        8.1 License. For the Term of this Agreement, BUY.COM hereby grants to
TOUR a fully-paid, nonexclusive, nontransferable, nonsublicensable, royalty-
free, worldwide license to use the trademarks of BUY.COM attached hereto as
Exhibit I, for which BUY.COM is the sole owner (the "BUY.COM MARKS") alone and
---------
as part of the BUY.COM TOUR MARK and solely in accordance with this Agreement.

        8.2 Proprietary Markings. TOUR hereby agrees to ensure that all
trademark and other proprietary notices of BUY.COM affixed to or displayed on
the BUY.COM MARKS will not be removed, obscured or modified; except that, with
respect to the BUY.COM TOUR Mark only, such proprietary notices shall only be
included adjacent to the exterior of the BUY.COM TOUR MARK.

        8.3 BUY.COM Trademarks. TOUR acknowledges that BUY.COM is the owner of
all right, title and interest in and to the BUY.COM MARKS, together with any new
or revised names, designs or designations that BUY.COM may adopt during the
Term, and TOUR agrees not to use the BUY.COM MARKS in any manner whatsoever
except as expressly provided in this Agreement. In addition, BUY.COM shall
provide TOUR with the specifications, style and other requirements for the use
of the BUY.COM MARKS (the "Specifications"), attached hereto as Exhibit I. TOUR
                                                                ---------
shall abide by the Specifications when using the BUY.COM MARKS. TOUR
shall execute any documents reasonably requested by BUY.COM to assist BUY.COM in
the prosecution, maintenance, protection or defense of the BUY.COM MARKS.

                                    Page 11
<PAGE>

        8.4 Use Guidelines. Subject to the foregoing, BUY COM acknowledges and
agrees that TOUR shall not be required to obtain approval from BUY.COM for any
day to day uses by TOUR of the BUY.COM TOUR MARK (provided they are used in
accordance with this Agreement and the terms and conditions of Section 9
herein). Any other use of the BUY.COM MARKS is subject to the following: (a)
they must be used solely in accordance with the Specifications, and (b) such use
shall be subject to prior written approval of BUY.COM, in accordance with the
procedures set forth below in this paragraph. In addition, in advance of any
dissemination or use by TOUR of any: (i) art work involving the BUY.COM MARKS;
or (ii) advertising or promotional material or literature bearing the BUY.COM
MARKS, TOUR, at its own expense, shall submit one (1) sample of each such art
work, advertising or promotional material or literature to BUY.COM, at the
address specified by BUY.COM in accordance with this Agreement, for its prior
approval. BUY.COM shall have ten (10) business days after receipt of any such
sample during which to approve or disapprove the proposed use or design. If
BUY.COM does not notify TOUR of its disapproval of any such proposed use or
design on or before the conclusion of such ten (10) business day period, BUY.COM
shall be deemed to have approved such proposed use or design. BUY.COM shall not
unreasonably withhold approval. If any such proposed usage is disapproved by
BUY.COM, along with its notice of disapproval, BUY.COM shall supply TOUR with
written notice of the specific reasons for such disapproval, but in any event
BUY.COM's decision shall be final and TOUR shall abide by any such disapproval
of BUY.COM. TOUR shall have the right to resubmit modified materials.

        8.5 Quality of Operation. TOUR acknowledges the goodwill which BUY.COM
            --------------------
has developed in connection with the BUY.COM MARKS. Accordingly, TOUR agrees
that it will not knowingly and intentionally take any actions which could
adversely affect such goodwill as developed by BUY.COM.

        8.6 Reservation of Rights. All right, title and interest to the BUY.COM
            ---------------------
MARKS, and other intellectual property and proprietary rights associated
therewith other than those specifically granted herein, shall at all times
remain that of BUY.COM for its own exclusive use and benefit, and all use of the
BUY.COM name and BUY.COM MARKS shall inure solely to the benefit of BUY.COM.
TOUR understands and agrees that upon the expiration

                                    Page 12
<PAGE>

or the earlier termination of this Agreement for any reason, all of its rights
and interests granted herein in the BUY.COM MARKS and any other intellectual
property of BUY.COM shall cease, and all such rights and interests shall revert
to BUY.COM.

        8.7 Quality Control. All promotional or advertising material containing
            ---------------
the BUY.COM MARKS shall be of a high quality that does not derogate from or
adversely affect the BUY.COM MARKS or the goodwill and reputation associated
therewith.

        8.8 No Prejudice of Trademarks. TOUR agrees that it will not use at any
            --------------------------
time during the Term any other trademark, brand name, trade name, symbol, design
or the like that BUY.COM reasonably believes is similar to or possibly may be
confused with the BUY.COM MARKS. TOUR will not intentionally take any action
that will harm or prejudice the BUY.COM MARKS or BUY.COM's rights therein in any
way. TOUR agrees not to apply for registration anywhere in the world of any
trademarks of BUY.COM, including the BUY.COM MARKS or any mark confusingly
similar thereto, and TOUR also agrees not to use or contest, during or after the
term of this Agreement, the BUY.COM Marks or any other trademark or logo adopted
by BUY.COM, so long as such logos are not confusingly similar to any marks used
by TOUR.

        8.9 Change of BUY.COM MARKS. In the event BUY.COM desires to change the
            -----------------------
BUY.COM MARKS, BUY.COM shall notify TOUR of the change (the "Change Notice").
TOUR shall implement the change within the BUY.COM TOUR MARK and all of its uses
where possible within twelve (12) months of TOUR's receipt of the Change Notice.
BUY.COM shall reimburse TOUR for fifty percent (50%) of the actual costs of
implementing such change.

   9.   USE OF BUY.COM TOUR MARK.  BUY.COM agrees that all uses of the BUY.COM
        ------------------------
TOUR MARK by BUY.COM shall be subject to the prior approval of TOUR, except that
specific uses, as well as categories or types of uses, that are approved once
will not require separate approval in each instance, and internal BUY.COM uses
shall not require approval. In advance of any dissemination or use by BUY.COM of
any: (i) art work involving

                                    Page 13
<PAGE>

the BUY.COM TOUR MARK; or (ii) advertising or promotional material or literature
bearing the BUY.COM TOUR MARK, BUY.COM, at its own expense, shall submit one (1)
sample of each such art work, advertising or promotional material or literature
to TOUR at the address specified by TOUR in accordance with this Agreement. TOUR
shall have ten (10) business days after receipt of any such sample during which
to approve or disapprove the proposed use or design. If TOUR does not notify
BUY.COM of its disapproval of any such proposed use or design on or before the
conclusion of such ten (10) business day period, TOUR shall be deemed to have
approved such proposed use or design. TOUR shall not unreasonably withhold
approval. If any such proposed usage is disapproved by TOUR, along with its
notice of disapproval, TOUR shall supply BUY.COM with written notice of the
specific reasons for such disapproval, but in any event, TOUR's decision shall
be final and BUY.COM shall abide by any such disapproval of TOUR. BUY.COM shall
have the right to resubmit modified materials.

        9.1 Quality of Operation. The parties acknowledge the goodwill which
            --------------------

TOUR and BUY.COM will develop in connection with the BUY.COM TOUR MARK.
Accordingly, the parties agree that each will not knowingly and intentionally
take any actions with could adversely affect such goodwill as developed by TOUR
and BUY.COM.

        9.2 Reservation of Rights. The parties understand and agree that upon
            ---------------------
the expiration or the earlier termination of this
Agreement for any reason, all of the rights and interests granted herein in the
BUY.COM TOUR MARK shall cease, and neither party shall have any rights to or use
in any manner the BUY.COM TOUR MARK.

        9.3 Quality Control. All promotional or advertising material containing
            ---------------
the BUY.COM TOUR MARK shall be of a high quality that does not derogate from or
adversely affect the BUY.COM TOUR MARK or the goodwill and reputation associated
therewith.

        9.4 No Prejudice of Trademarks. BUY.COM agrees that, after prior written
            --------------------------
notice from TOUR, it will not use at any time during the Term any other
trademark, brand name, trade name, symbol, design or the like that TOUR
reasonably believes is similar to or possibly may be confused with the BUY.COM
TOUR MARK, excluding the "BUY.COM" portion

                                    Page 14
<PAGE>

thereof. BUY.COM will not intentionally take any action that will harm or
prejudice the BUY.COM TOUR MARK or either party's rights therein in any way.

   10.  TERM.
        ----

        10.1 The term of this Agreement shall commence as of the date of this
Agreement, and terminate on December 31, 2004, unless sooner terminated or
extended in accordance with this Section 10 (the "Term"); provided, however, the
parties acknowledge and agree that the renaming of the BUY.COM TOUR and the
operational aspects of this Agreement shall not begin until January 1, 2000.

        10.2 This Agreement will automatically terminate upon the occurrence of
any one (1) of the following events:

             (a) Upon the occurrence of certain events in accordance with
Section 11;

             (b) Upon an Event of Default as described in Section 13 hereof; or

             (c) Upon the termination or expiration of that certain E-Commerce
Agreement by and between TOUR and BUY.COM of even date herewith (the "E-Commerce
Agreement").

        10.3 Either party may terminate this Agreement immediately upon written
notice to the other party in the event that such other party is finally
adjudicated by a court of competent jurisdiction to have committed any act or
done anything which shall be an offense involving moral turpitude under federal,
state or local laws.

        10.4 Effect of Termination. In the event of termination of this
             ---------------------
Agreement by BUY.COM or TOUR, TOUR may only retain cash and common stock that in
the aggregate is equal to the Sponsorship Fees for the period that has expired
from January 1, 2000 until the

                                    Page 15
<PAGE>

effective date of termination (with part years pro-rated). For purposes of this
Section 10.4, the market value of the common stock shall be determined as
follows:

             (a) If traded on a national securities exchange or through the
     NASDAQ National Market, the value shall be deemed to be the average of the
     last reported sale or closing prices of the securities on such exchange or
     market over the last ten (10) trading days immediately prior to the
     effective date of termination);

             (b) If there is no active public market, the value shall be the
     fair market value thereof, as determined in good faith by Williamette
     Valuation (if separately engaged for this purpose) or such other
     independent auditor as the parties may mutually agree.

     Notwithstanding  the  foregoing,  in the event of any  termination  by TOUR
pursuant  to Section  11, the  provisions  of Section 11 shall  control and this
Section 10 shall have no effect. Any repurchase of BUY.COM stock by BUY.COM
shall be in  accordance  with the terms of that certain  Common  Stock  Issuance
Agreement  between  the  parties of equal date  herewith  (the  "Stock  Issuance
Agreement").

     11. SPONSORSHIP FEE.
         ----------------

         Subject to the terms and conditions of this Agreement, the parties
agree that the total Sponsorship Fee due for the five year Term shall be funded
by BUY.COM's issuance of 1,800,000 shares of BUY.COM Common Stock, payment of
$8.5 million upon completion of BUY.COM's initial public offering and securing a
$17 million letter of credit, all of which shall be subject to the terms and
conditions set forth on Exhibit J (the "Sponsorship Fee"). BUY.COM acknowledges
                        ---------
that TOUR's internal annual allocations of such funds are as set forth in
Exhibit K.
---------

     12. REPRESENTATIONS AND WARRANTIES.
         ------------------------------

                                    Page 16
<PAGE>

        12.1 By BUY.COM.  As a material inducement for TOUR to enter into this
             ----------
Agreement,  BUY.COM  represents  and  warrants  to TOUR  (and  unless  otherwise
specified,  such  representations  and warranties are true as of the date hereof
and will continue to be effective at all times,  as if  continuously  reiterated
through the Term) that:

             (a) BUY.COM is a corporation, duly organized and in good standing
under the laws of the State of Delaware. BUY.COM has full power and authority to
execute and deliver this Agreement and all documents now or hereafter to be
executed and delivered by it pursuant to this Agreement, and to perform all
obligations arising under this Agreement and under such other agreements. This
Agreement constitutes the legal, valid and binding obligation of BUY.COM,
enforceable in accordance with its terms, covenants and conditions against
BUY.COM; and

             (b) This Agreement does not contravene any provision of the
corporate powers of BUY.COM, any judgment, order, decree, writ or injunction, or
any provision of any applicable law or regulation, and the delivery of this
Agreement will not result in a breach of, constitute a default under, or require
consent pursuant to any credit agreement, lease, indenture, mortgage, deed of
trust, purchase agreement, guaranty or other instrument to which BUY.COM is a
party or by which BUY.COM or its assets are bound or affected.

        12.2  By TOUR.  As a material inducement for BUY.COM to enter into this
              -------
Agreement,  TOUR  represents  and  warrants  to BUY.COM  (and  unless  otherwise
specified,  such  representations  and warranties are true as of the date hereof
and will continue to be effective at all times,  as if  continuously  reiterated
through the Term) that:

             (a) TOUR is a corporation, duly organized and in good standing
under the laws of the State of Maryland. TOUR has full power and authority to
execute and deliver this Agreement and all documents now or hereafter to be
executed and delivered by it pursuant to this Agreement, and to perform all
obligations arising under this Agreement and under such other agreements. This
Agreement constitutes the legal, valid and binding obligation of TOUR,
enforceable in accordance with its terms, covenants and conditions against TOUR;
and

                                    Page 17
<PAGE>

             (b) This Agreement does not contravene any provision of the
corporate powers of TOUR, any judgment, order, decree, writ or injunction, or
any provision of any applicable law or regulation, and the delivery of this
Agreement will not result in a breach of, constitute a default under, or require
consent pursuant to any credit agreement, lease, indenture, mortgage, deed of
trust, purchase agreement, guaranty or other instrument to which TOUR is a party
or by which TOUR or its assets are bound or affected.

   13.  EVENTS OF DEFAULT; RIGHTS AND REMEDIES.  The occurrence of any one
        --------------------------------------
(1) or more of the following  events prior to the  expiration of the Term hereof
shall constitute an "Event of Default" hereunder:

        13.1 Default by either party in the performance or observance of any of
the material terms, agreements, covenants or conditions of this Agreement (other
than payment terms which are addressed in Section 11 above), which default
continues uncured for thirty (30) days after written notice thereof;

        13.2 The application by either party hereto (or its corporate parent)
for, or consent to, the appointment of a receiver, trustee, liquidator or
custodian (or similar official) of it or of all or a substantial part of its
assets, or if either party (or its corporate parent) shall: (i) make a general
assignment for the benefit of creditors; (ii) be adjudicated a bankrupt or
insolvent; (iii) file a voluntary petition in bankruptcy or a petition or an
answer seeking reorganization or any arrangement with creditors or to take
advantage of any insolvency law; (iv) file an answer admitting the material
allegations of a petition filed against it in any bankruptcy, reorganization or
insolvency proceeding; or (v) if any corporate action shall be taken by it for
the purpose of effecting any of the foregoing; or if an order, judgment or
decree shall be entered by any court or tribunal of competent jurisdiction
approving a petition seeking reorganization or appointing a receiver, trustee,
liquidator or custodian (or other similar official) of either party hereto (or
its corporate parent) or of all or a substantial part of its assets, and such
order, judgment or decree shall continue unstayed and in effect for a period of
thirty (30) consecutive days;

                                    Page 18
<PAGE>

        13.3  Any representation or warranty contained in this Agreement shall
be false or misleading in any material respect and remains uncorrected for
thirty (30) days after written notice thereof; or

        13.4  The occurrence of a material breach under the E-Commerce Letter
Agreement with a material breach by BUY.COM thereunder shall be deemed an Event
of Default by BUY.COM hereunder, and a material breach by TOUR thereunder shall
be deemed an Event of Default by TOUR hereunder.

   14.  PGA TOUR PLAYERS.  BUY.COM acknowledges that TOUR does not have the
        ----------------
right to use the name, signature, photograph or likeness of any PGA TOUR, SENIOR
PGA TOUR or BUY.COM TOUR player in connection with a commercial product or
service, including, without limitation, any product or service marketed by
BUY.COM, unless so authorized by the player. BUY.COM agrees that it will not
exercise the rights granted in this Agreement in any manner that constitutes an
endorsement of any commercial product or service by any PGA TOUR, SENIOR PGA
TOUR or BUY.COM TOUR player without having obtained proper advance written
authorization from such player. BUY.COM acknowledges that it shall be its
obligation to obtain any such written authorization.

   15.  INDEMNIFICATION.
        ---------------

                                    Page 19
<PAGE>

        15.1 BUY.COM covenants and agrees to indemnify and hold TOUR, and its
officers, directors, employees, agents and affiliated entities and their
respective officers, directors and employees (the "TOUR Indemnitees") harmless
from and against any and all losses, claims, damages, expenses, judgments,
awards, petitions, demands or liabilities (including, without limitation,
reasonable counsel and expert witness fees whether incurred in preparation for
trial, at trial, on appeal or in bankruptcy proceedings), joint or several, to
which any of the TOUR Indemnitees may become subject on account of any breach or
alleged breach or failure of any agreements, obligations, representations or
warranties of BUY.COM under this Agreement or any other act, omission or
representation by BUY.COM; provided that TOUR will notify BUY.COM promptly in
writing upon receipt of notice of any such claim and will tender to BUY.COM the
opportunity to defend and/or settle such claim at BUY.COM's expense and will
reasonably assist and cooperate with BUY.COM in defending and/or settling such
claim (so long as such settlement or culpability on the part of BUY.COM includes
(x) a general release of BUY.COM from all liability in connection therewith and
(y) does not contain any admission of wrongdoing or culpability on the party of
BUY.COM). TOUR shall not agree to the settlement of any such claim, action or
proceeding without the prior written consent of BUY.COM, which shall not be
unreasonably withheld.

        15.2 TOUR covenants and agrees to indemnify and hold BUY.COM, and its
officers, directors, employees, agents and affiliated entities and their
respective officers, directors and employees (the "BUY.COM Indemnitees")
harmless from and against any and all losses, claims, damages, expenses,
judgments, awards, petitions, demands or liabilities (including, without
limitation, reasonable counsel and expert witness fees whether incurred in
preparation for trial, at trial, on appeal or in bankruptcy proceedings), joint
or several, to which any of the BUY.COM Indemnitees may become subject on
account of any breach or alleged breach or failure of any agreements,
obligations, representations or warranties of TOUR under this Agreement or any
other act, omission or representation by TOUR; provided that BUY.COM will notify
TOUR promptly in writing upon receipt of notice of any such claim and will
tender to TOUR the opportunity to defend and/or settle such claim at TOUR's
expense and will reasonably assist and cooperate with TOUR in defending and/or
settling such claim (so long as such settlement or culpability on the party of
TOUR includes (x) a general release of TOUR

                                    Page 20
<PAGE>

from all liability in connection therewith and (y) does not contain any
admission of wrongdoing or culpability on the part of TOUR). BUY.COM shall not
agree to the settlement of any such claim, action or proceeding without the
prior written consent of TOUR, which shall not be unreasonably withheld.

   16.  CONFIDENTIALITY.  Except to the extent otherwise required by
        ---------------
applicable law, neither TOUR nor BUY.COM shall make any public disclosure of any
of the financial terms contained in this Agreement without the prior written
consent of the other party in each instance; provided, however, that either
party may, after providing advance written notice to the other party, disclose
the terms of this Agreement and/or the transactions contemplated hereby in any
filing made pursuant to the Securities Act of 1933 ( the "Securities Act") or
the Securities Exchange Act of 1934 (the "Exchange Act"), to the extent that
such party, after consultation with outside legal counsel, determines that such
disclosure is required under the Securities Act or Exchange Act, as applicable.

   17.  NO AGENCY OR JOINT VENTURE.   This Agreement shall not be construed as
        --------------------------
in any way establishing a partnership, joint venture, express or implied agency,
employer-employee or special fiduciary relationship between the parties hereto.

   18.  NOTICES.
        -------

        18.1  All notices, consents, requests and other communications hereunder
shall be in writing and shall be sent by hand delivery, by certified or
registered mail (return receipt requested), or by a recognized national
overnight courier service as set forth below:

             If to BUY.COM:  BUY.COM, INC.
                             85 Enterprise
                             Aliso Viejo, California  92656
                             Attn:  Greg Hawkins
                             Copy:  General Counsel

                                    Page 21
<PAGE>

             If to TOUR:    PGA TOUR, Inc.
                            112 PGA TOUR Boulevard
                            Ponte Vedra Beach, Florida  32082
                            Attn:  Commissioner

        18.2  Notices delivered pursuant to Section 18.1 shall be deemed given:
(i) at the time delivered, if personally delivered; (ii) at the time received,
if mailed; and (iii) one (1) business day after timely delivery to the courier,
if by overnight courier service.

        18.3  Any party hereto may change the address to which notice is to be
sent by written notice the other party in accordance with this Section 18.

   19.  MISCELLANEOUS.
        -------------

        19.1  This Agreement including all Exhibits hereto (all of which are
incorporated herein by this reference), contains the entire agreement and
understanding concerning the subject matter hereof between the parties hereto.

        19.2  No waiver, termination or discharge of this Agreement, or any of
the terms or provisions hereof, shall be binding upon either party unless
confirmed in writing. No waiver by either party hereto of any term or provision
of this Agreement or of any default hereunder shall affect such party's rights
thereafter to enforce such term or provision or to exercise any right or remedy
in the event of any other default, whether or not similar. This Agreement may
not be modified or amended except by a writing executed by both parties hereto.

        19.3  If any provision of this Agreement shall be held void, voidable,
invalid or inoperative, no other provision of this Agreement shall be affected
as a result thereof, and, accordingly, the remaining provisions of this
Agreement shall remain in full force and effect as though such void, voidable,
invalid or inoperative provision had not been contained herein.

                                    Page 22
<PAGE>

        19.4  This Agreement shall be governed by and construed in accordance
with the laws of the State of Delaware.

        19.5  Neither party hereto may assign this Agreement, in whole or in
part, without the prior written consent of the other party, and any attempted
assignment not in accordance herewith shall be null and void and of no force or
effort, provided that, either party may assign this Agreement to another
subsidiary or affiliate as part of a corporate reorganization or restructure, so
long as no third party owns a part of or otherwise controls such subsidiary or
affiliate.

        19.6  This Agreement shall be binding upon and shall inure to the
benefit of the parties hereto and their respective heirs, representatives,
successors and permitted assigns.

        19.7  Upon the reasonable request of the other party hereto, each party
agrees to take any and all actions, including, without limitation, the execution
of certificates, documents or instruments, necessary or appropriate to give
effect to the terms and conditions set forth in this Agreement.

        19.8  This Agreement may be executed in one or more counterparts, each
of which shall be deemed to be an original, but all of which together shall
constitute the same Agreement. Any signature page of any such counterpart, or
any electronic facsimile thereof, may be attached or appended to any other
counterpart to complete a fully executed counterpart of this Agreement, and any
telecopy or other facsimile transmission of any signature shall be deemed an
original and shall bind such party.

    IN WITNESS WHEREOF, each of the parties hereto has executed this
Agreement as of the date and year first above written.

                                    PGA TOUR, INC.

                                    By:
                                        W. William Calfee
                                        Executive Vice President

                                    Page 23
<PAGE>

                                     BUY.COM, INC.

                                     By:
                                         Greg Hawkins
                                         Chairman and Chief Executive Officer

                                    Page 24

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