Document:

Exhibit 10.35

                          AMENDMENT TO PROMISSORY NOTE

      The undersigned, Heidi G. Miller, hereby agrees that the Promissory Note
dated March 7, 2000, issued by me to priceline.com Incorporated is hereby
amended by replacing the second paragraph thereof reading in full as follows:

      "The Borrower shall pay to the Company a mandatory prepayment of accrued
interest hereunder and principal upon the exercise, in whole or in part at any
time prior to the Maturity Date, of the stock options granted pursuant to the
Employment Agreement, dated February 18, 2000, by and between the Company and
Borrower, or granted to the Borrower thereafter under the Company's 1999 Omnibus
Plan (including any amendments thereto), or any options granted in exchange,
replacement or substitution therefor, in an amount equal to twenty-five percent
(25%) of Borrower's pretax profits from such exercise, to the extent that the
sum of such pretax profits, and of all prior pretax profits from such exercises,
exceeds six million, six hundred thousand dollars ($6,600,000.00) (the "Profits
Threshold"). Within ten (10) Business Days (as hereinafter defined) following
each date that the Borrower shall receive pretax profits from any exercise of
the options referred above in excess of the Profits Threshold, Borrower shall
deliver a mandatory prepayment in reduction of the accrued interest and
outstanding principal balance of this Note in an amount equal to 25% of the
excess attributed to such exercise. Each prepayment, as provided herein, shall
be applied first against accrued but unpaid interest under this Note and then in
reduction of the outstanding principal amount hereof until the indebtedness of
this Note is paid in full. "Business Day" shall mean any day on which NASDAQ is
not authorized or required to close and trading of securities is permitted."

      IN WITNESS WEHREOF, I have signed this Amendment to Promissory Note on
August 21, 2000.

                                        ------------------------
                                        Heidi G. MillerExhibit 10.36

                        Amendment to Employment Agreement

      The employment agreement, dated as of February 18, 2000, by and between
priceline.com Incorporated and Ms. Heidi G. Miller, shall be amended by
replacing paragraph 4(c)(i) in its entirety with the following:

      "(i) Options in Common Stock of the Company.

      On the Commencement Date, Executive was granted stock options (the
"Original Stock Options") under a stand-alone plan having terms substantially
similar to the terms of the priceline.com Incorporated 1999 Omnibus Plan (the
"Plan") to purchase two million five hundred thousand (2,500,000) shares of the
Company's common stock (the "Common Stock"). On August 9, 2000, Executive was
granted certain stock options (the "Refresher Options" and, together with the
Original Stock Options, the "Option") pursuant to the terms of a Stock Option
Award (the "Stock Option Award"), dated August 9, 2000, by and between the
Company and Executive. The grant of the Original Options and the Refresher
Options are each referred to herein as a "Separate Option Grant." The Original
Options shall terminate on the tenth (10) anniversary of the date of grant or,
if earlier, following a termination of Executive's employment with the Company
as provided below. The per share exercise price with respect to one million
(1,000,000) shares of the Common Stock subject to the Original Options is the
Fair Market Value of the Common Stock on the date of grant of the Original
Options which is equal to the closing market price of the Common Stock on the
NASDAQ Stock Market on the last trading day prior to the date of grant (such
portion of the Original Options, the "FMV Options"). The exercise price with
respect to the remaining one million five hundred thousand (1,500,000) shares of
the Common Stock subject to the Original Options is $90.00 per share (such
portion of the Original Options, the "Premium Options"). The Original Options
will vest and become exercisable as to one sixth (1/6) of the Original Options
upon the Commencement Date, as to one sixth (1/6) of the Original Options on
December 31, 2000, as to one-third (1/3) of the Original Options on December 31,
2001 and as to the final one-third (1/3) of the Original Options on December 31,
2002, provided that Executive is employed by the Company on such vesting dates,
subject to accelerated vesting and excercisability as provided below. The
Refresher Options shall have the terms set forth in the Stock Option Award. On
each vesting date, forty percent (40%) of the portion of the Original Options
vesting on each such vesting date shall be FMV Options and sixty percent (60%)
of the portion of the Original Options vesting on each such vesting date shall
be Premium Options.

      Vesting and exercisability shall be accelerated as follows: (i) upon a
Termination without Cause or a Termination for Good Reason, each Separate Option
Grant will immediately vest and become exercisable (to the extent not then
vested) as follows: sixty-five percent (65%) of the shares, if the termination
takes place prior to the first anniversary of the Commencement Date; eighty-two
and one-half percent (82.5%) of the shares, if the termination takes place on or
after the first anniversary of the Commencement Date and prior to the second
anniversary of the Commencement Date; and one hundred percent (100%) of the
shares, if the termination takes place thereafter; or (ii) upon death or
Termination for a Disability, each Separate Option Grant will immediately vest
as to fifty percent (50%) of Executive's then unvested shares; and (iii) in the
event of a Change in Control, each Separate Option Grant will vest and become
exercisable (to the extent not then vested): sixty-five percent (65%) of the
shares, if the Change in Control takes place prior to the first anniversary
of the Commencement Date; eighty-two and one-half percent (82.5%) of the shares,
if the Change in Control takes place on or after the first
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anniversary of the Commencement Date and prior to the second anniversary of the
Commencement Date; and one hundred percent (100%) of the shares, if the Change
in Control takes place thereafter; provided that the remaining unvested shares
shall vest and become exercisable (to the extent not otherwise vested and
exercisable prior thereto by the other terms hereof) six (6) months after the
Change in Control, if the Executive is then employed by the Company or, if
earlier, upon a Termination without Cause, Termination for Good Reason, death,
Termination for Disability or the Option not being continued or assumed upon the
Change in Control. Upon a termination, each Option shall continue to be
exercisable as follows: (i) in the event of a termination due to Termination
without Cause, Termination for Good Reason, death or Termination for Disability,
the Option shall continue to be exercisable for eighteen (18) months following
the date of such termination and (ii) in the vent of a Termination for Cause or
by the Executive without Good Reason, all unvested options shall be forfeited
and vested options shall remain exercisable for ninety (90) days following the
date of such termination."

      IN WITNESS WHEREOF, the parties hereto have duly executed this amendment
as of August 21, 2000.

                                        PRICELINE.COM INCORPORATED

                                        ----------------------------
                                        By:    Rick Braddock
                                        Title: Chairman

                                        HEIDI G. MILLER

                                        ----------------------------Exhibit 10.37

                       SECOND AMENDMENT TO PROMISSORY NOTE

      The undersigned, Jeffery H. Boyd, hereby agrees that the Promissory Note
dated February 10, 2000, as amended on March 28, 2000, issued by me to
priceline.com Incorporated is hereby amended by replacing the second paragraph
thereof reading in full as follows:

      "The Borrower shall pay to the Company a mandatory prepayment of accrued
interest hereunder and principal upon the exercise, at any time on or prior to
February 10, 2005, of one or more Company stock options granted pursuant to the
offer of employment dated December 30, 1999, by and between the Company and
Borrower, or granted to the Borrower thereafter under the Company's 1999 Omnibus
Plan (including any amendments thereto), or any options granted in exchange,
replacement or substitution therefor, in an amount equal to twenty-five percent
(25%) of Borrower's pretax profits in excess of two million dollars
($2,000,000.00) (the "Profits Threshold"). Within ten (10) Business Days (as
hereinafter defined) following each date that the Borrower shall exercise
options referred to above in excess of the Profits Threshold, Borrower shall
deliver a mandatory prepayment in reduction of the accrued interest and
outstanding principal balance of this Note in an amount required by the first
sentence of this paragraph. Each prepayment, as provided herein, shall be
applied first against accrued but unpaid interest under this Note and then in
reduction of the outstanding principal amount hereof until the indebtedness of
this Note is paid in full. "Business Day" shall mean any day on which NASDAQ is
not authorized or required to close and trading of securities is permitted."

      IN WITNESS WEHREOF, I have signed this Second Amendment to Promissory Note
on August 21, 2000.

                                        ------------------------
                                        Jeffery H. BoydExhibit 10.38

                            Amendment to Offer Letter

      The offer of employment, dated December 30, 1999, by and between
priceline.com Incorporated and Jeffery H. Boyd, shall be amended by adding a new
sentence at the end of the fourth paragraph thereof reading in full as follows:

      "The term Options, except as used in this fourth paragraph, shall include
any and all options to purchase shares of the Company's common stock granted to
you under the Company's 1999 Omnibus Plan (including any amendments thereto),
whether granted on the date hereof or thereafter."

                                        PRICELINE.COM INCORPORATED

                                        ----------------------------
                                        By:    Rick Braddock
                                        Title: Chairman

                                        JEFFERY H. BOYD

                                        ----------------------------

Dated: August 21, 2000

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