Document:

<PAGE>
                                                                    EXHIBIT 10.8

                           LEASE AMENDMENT NUMBER ONE

         This Lease Amendment Number One (the "Amendment") is entered into this
1st day of May, 2002 by and between SKY HARBOR ASSOCIATES LIMITED PARTNERSHIP, a
Michigan limited partnership, whose address is 74 East Long Lake Road,
Bloomfield Hills, Michigan 48304 ("Landlord"); and CET ENVIRONMENTAL SERVICES,
INC., a California corporation whose address is 7032 South Revere Parkway,
Englewood, CO 80112 ("Tenant").

        The facts upon which this Amendment is based are:

        A.     Landlord and Tenant entered into a certain Lease Agreement dated
               March 1, 1999, for the premises located at 7032 South Revere
               Parkway (the "Original Premises"), Englewood, Colorado 80112.
               That Lease Agreement, including all addenda, exhibits, riders,
               attachments, and amendments thereto shall hereafter be referred
               to as the "Lease";

        B.     To date, Tenant has remained in occupancy of the Premises; and

        C.     Landlord and Tenant desire to amend the Lease in order to provide
               for, among other things, the further extension of the Lease Term,
               the increase in the base rental rates, the reduction of the
               square footage and the construction of certain tenant
               improvements for the Premises, but all only in accordance with
               and subject to the terms and conditions of this Amendment.

        NOW, THEREFORE, in consideration of the mutual covenants and conditions
contained herein, and for other good and valuable consideration, the receipt and
sufficiency of which is hereby mutually acknowledged, the parties hereby agree
as follows:

1.     Incorporation of Recitals. The recitals contained in Paragraphs A through
       C above, both inclusive, are incorporated herein and made a part of this
       Amendment.

2.     Defined Terms. Terms used herein shall have the same meaning as defined
       in the Lease, unless otherwise defined herein. The following specific new
       terms are hereby enumerated:

         "New Commencement Date" as used herein shall mean June 1,2002..

         "New Expiration Date" as used herein shall mean May 31, 2005..

         "Original Premises" as used herein shall mean the original 12,000
         square feet which comprise the entire rentable square feet in Building
         7032.

         "Premises" as used herein shall mean the reduced premises of
approximately 6,000 square feet that comprise the southern half of Building 7032
as cross hatched on Exhibit A.

3.     Tenant Improvements. Landlord shall provide those improvements to the
       Premises as indicated below with the location of the improvements to be
       mutually determined and acceptable by Tenant and Landlord. Landlord shall
       be responsible for the initial $4,000 (Four Thousand and 00/lOO Dollars)
       of Tenant Improvements costs. Any costs incurred, either soft or hard,
       including, but not limited to architectural fees, engineering fees,
       construction management, actual costs of construction, materials and
       labor, which shall exceed $4,000 shall be the mutual and equitable
       responsibility of Tenant and Landlord.

                 a)       A warehouse demising fire wall.
                 b)       Installation of two fire doors.
                 c)       A fire wall closure in the front hall.
                 d)       Tenant, at its expense, agrees to provide the
                          refrigerator and microwave for the common area
                          kitchen and shall provide janitorial service for
                          the common area kitchen, hall and restrooms
                          (until such time as another tenant occupies the
                          south end of building 7032 and can share in the
                          janitorial expense.
                 e)       And such other improvements that may be required
                          either by the appropriate governing entity or the
                          Landlord.

<PAGE>

4.   Base Rent. Commencing on the New Commencement Date, Tenant shall pay to
     Landlord Base Rent in monthly installments in advance on the first day of
     each calendar month during the Term, as follows:

<TABLE>
<S>                                 <C>                       <C>                       <C>
06/01/02 - 05/31/03                 $7.67 PSF/NNN             $3,835.00 Monthly         $46,020.00 Annually
06/01/03 - 05/31/04                 $7.92 PSF/NNN             $3,960.00 Monthly         $47,520.00 Annually
06/01/04 - 05/31/05                 $8.17 PSF/NNN             $4,085.00 Monthly         $49,020.00 Annually
</TABLE>

Tenant shall continue to be responsible for Tenant's proportionate share of
taxes, insurance and common area maintenance as enumerated in the Lease.

5.   Utilities. Tenant shall promptly pay its proportionate share of the utility
     costs, to include gas and electricity, based on Tenant's historical
     use/consumption of such services over the entire Original Premises, then
     reduced by one-half. Landlord shall be responsible for the utility costs in
     the vacated portion of Building 7032 until such time as another tenant
     shall occupy the south end of Building 7032 and assume that responsibility.

6.   Incorporation of Lease Terms. With the exception of the foregoing
     provisions of this Amendment, Tenant and Landlord shall be subject to all
     terms, covenants and conditions of the Lease, and the same shall remain in
     full force and effect as therein stated. In the event of any express
     conflict or inconsistency between the terms of this Amendment and the terms
     of the Lease, the terms of this Amendment shall prevail.

7.   Ratification: Except as expressly modified by this Amendment, all other
     terms and conditions of the Lease are hereby expressly approved, ratified
     and affirmed.

         Intending to be legally bound, the parties have signed this Amendment
upon the date first written above.

<TABLE>
<S>                                           <C>
LANDLORD                                      TENANT

SKY HARBOR ASSOCIATES                         CET ENVIRONMENTAL
LIMITED PARTNERSHIP                           SERVICES, INC

By:  Diversified Development Corporation,     By:
      its General Partner                        -----------------------------------
                                                           Dale W. Bleck

By:                                           Its:
   ------------------------------------           ----------------------------------
         Keith J. Pomeroy, President                            CFO

Date:                                         Date:
     ----------------------------------            ---------------------------------
</TABLE><PAGE>

                                                                   EXHIBIT 10.26

                                    AMENDMENT
                                       TO
                        AGREEMENT FOR INVENTORY FINANCING

         This Amendment ("Amendment") to the Agreement for Inventory Financing
is made as of November 11, 2002 by and among IBM CREDIT CORPORATION, a Delaware
corporation ("IBM Credit"), BUSINESS SUPPLIES DISTRIBUTORS HOLDINGS, LLC, a
limited liability company duly organized under the laws of the state of Delaware
("Holdings"), INVENTORY FINANCING PARTNERS, LLC, a limited liability company
duly organized under the laws of the state of Delaware ("IFP"), SUPPLIES
DISTRIBUTORS, INC. (formerly known as BSD Acquisition Corp.), a corporation duly
organized under the laws of the state of Delaware ("Borrower"), PRIORITY
FULFILLMENT SERVICES, INC., a corporation duly organized under the laws of the
state of Delaware ("PFS") and PFSWEB, Inc., a corporation duly organized under
the laws of the state of Delaware ("PFSweb") (Borrower, Holdings, IFP, PFS,
PFSweb, and any other entity that executes this Agreement or any Other Document,
including without limitation all Guarantors, are each individually referred to
as a "Loan Party" and collectively referred to as "Loan Parties").

                                    RECITALS:

         A. Borrower and IBM Credit have entered into that certain Agreement for
Inventory financing ("AIF") dated as of March 29, 2002 (the "Agreement");

         B. PFS has expressed its desire to acquire from IFP its fifty one
percent (51%) share of Holdings ("Proposed Acquisition");

         C. IBM Credit consents to the Proposed Acquisition subject to the terms
and conditions set forth herein; and

         D. The parties have agreed to modify the Agreement as more specifically
set forth below, upon and subject to the terms and conditions set forth herein.

                                    AGREEMENT

         NOW THEREFORE, in consideration of the premises and other good and
valuable consideration, the receipt and sufficiency of which is hereby
acknowledged, Borrower and IBM Credit hereby agree as follows:

SECTION 1. DEFINITIONS. All capitalized terms not otherwise defined herein shall
have the respective meanings set forth in the Agreement.

SECTION 2. AMENDMENT. Subject to Section 4 hereof, the Agreement is hereby
amended as follows:

         A. The AIF is hereby amended as follows:

         (a) The AIF is hereby amended by deleting all references to IFP from
the caption paragraph therein;

         (b) Section 1.1 is hereby amended by (i) amending the definition of
"Holdings" to read in its entirety as follows:

         ""Holdings": as defined in the caption." and (ii) deleting the
definition of "IFP";

<PAGE>

         (c) Section 6.1 is hereby amended by deleting the last sentence in its
entirety and substituting, in lieu thereof, the following:

     "PFS directly owns One Hundred Percent (100%) of the membership interests
of Holdings and Holdings directly owns One Hundred Percent (100%) of the capital
stock of Borrower."

         (d) Section 6.5 is hereby amended by deleting in their entirety the two
references to "(other than IFP)".

         (e) Section 9.1(R)(b) is hereby amended in its entirety to read as
follows:

         "(b PFS ceases to directly own One Hundred Percent (100%) of the
membership interests of Holdings or"

         (f) Section 10.13(v) is hereby deleted in its entirety.

         (g) Section 10.13 "Recipient Information for Internet transmissions:"
is hereby amended by deleting the first sentence in its entirety and
substituting, in lieu thereof, the following:

         "Name of Borrower's and Holdings' Designated Central Contact Authorized
to Receive IDs and Passwords:"

         B. Attachment A to the AIF is hereby amended by deleting such
Attachment A in its entirety and substituting, in lieu thereof, the Attachment A
attached hereto. Such new Attachment A shall be effective as of the date
specified in the new Attachment A. The changes contained in the new Attachment A
include, without limitation, the following:

         (a) The following definitions of "Total Assets" and "Total Net Worth"
in Section IV of Attachment A are amended in their entirety to read as follows:

         "Total Assets" shall mean the total of Current Assets and Long Term
         Assets. For the purpose of calculating Total Assets for Borrower, the
         accumulated earnings of Borrower's Canadian and European subsidiaries
         should be excluded.

         "Total Net Worth" (the amount of owner's or stockholder's ownership in
         an enterprise) is equal to Total Assets minus Total Liabilities. For
         the purpose of calculating Total Net Worth of Borrower, the accumulated
         earnings of Borrower's Canadian and European subsidiaries should be
         excluded.

         (b) Borrower will be required to maintain the following financial
ratios, percentages and amounts as of the last day of the fiscal period under
review (monthly, quarterly, annually) by IBM Credit:

<Table>
<Caption>
                                                                   Covenant
         Covenant                                                  Requirement
         --------                                                  -----------
<S>                                                                <C>

(i)      Revenue on an Annual Basis* (i.e. the current fiscal      Greater than Zero and
         year-to-date Revenue annualized) to Working Capital       Equal to or Less than 43.0:1.0

         *ANNUALIZED REVENUE FROM INTERCOMPANY SALES ARE
         EXCLUDED FROM THIS CALCULATION.

(ii)     Net Profit** after Tax to Revenue                         Equal to or Greater than
         **Excluding all income and losses applicable to 100%      0.20 percent
         ownership in Canadian and European subsidiaries.
</Table>

<PAGE>

<Table>
<S>                                                                <C>
(iii)    Total Liabilities to Tangible Net Worth***                Greater than Zero and
                                                                   Equal to or Less than 7.0:1.0

         ***Accumulated earnings of Borrower's Canadian
         and European subsidiaries are excluded from
         calculation of Borrower's Total Assets and
         Total Net Worth.
</Table>

         (c) Business Supplies Distributors Holdings, LLC will be required to
maintain the following financial ratios, percentages and amounts as of the last
day of the fiscal period under review (monthly, quarterly, annually) by IBM
Credit:

<Table>
<Caption>
                                                           Covenant
         Covenant                                          Requirement
         --------                                          -----------
<S>                                                        <C>

(i)      Revenue on an Annual Basis (i.e.                  Greater than Zero and Equal
         the current fiscal year-to-date Revenue           to or Less than 43.0:1.0
         annualized) to Working Capital

(ii)     Net Profit after Tax to Revenue                   Equal to or Greater than 0.15
                                                           percent

(iii)    Total Liabilities to Tangible Net Worth           Greater than Zero and Equal to
                                                           or Less than 8.0:1.0
</Table>

         (d) PFSweb, Inc. will be required to maintain the following financial
ratios, percentages and amounts as of the last day of the fiscal period under
review (monthly, quarterly, annually) by IBM Credit:

<Table>
<Caption>
      COVENANT                      COVENANT REQUIREMENT         AS OF DATE
      --------                      --------------------         ----------
<S>                                 <C>                         <C>

(i)   Minimum Tangible Net Worth    $24,000,000.00               09/30/02
                                    $20,000,000.00               10/31/02
                                    $20,000,000.00               11/30/02
                                    $20,000,000.00               12/31/02
                                    $18,000,000.00               01/31/03
                                    $18,000,000.00               02/28/03
                                    $18,000,000.00               03/31/03
</Table>

         (e) Section III is amended by deleting in its entirety the reference to
Inventory Financing Partners and its Accounts.

         C. Attachment B to the AIF is amended by deleting such Attachment B in
its entirety and substituting, in lieu thereof, the Attachment B attached
hereto.

         D. Attachment C-1 to the AIF is hereby amended by deleting such
Attachment C-1 in its entirety and substituting, in lieu thereof, the Attachment
C-1 attached hereto. Such new Attachment C-1 shall be effective as of the date
specified in the new Attachment C-1. The changes contained in the new Attachment
C-1 include, without limitation, the following:

         Section I of Attachment C-1 is amended and restated in its entirety to
read as follows:

"I. FINANCIAL COVENANTS:

<PAGE>

SUPPLIES DISTRIBUTORS, INC.

<Table>
<Caption>
     COVENANT                                 COVENANT REQUIREMENT        COVENANT ACTUAL
     --------                                 --------------------        ---------------
<S>                                           <C>                         <C>

(i) Annualized Revenue* to Working Capital    Greater than Zero and
                                              Equal to or Less than
                                              43.0:1.0

  *Annualized Revenue from intercompany
sales are  excluded from this
calculation.

(ii) Net Profit** after Tax to Revenue        Equal to or Greater than
                                              0.20 percent

  **Excluding all income and losses
applicable to 100% ownership in Canadian
and European subsidiaries.

(iii) Total Liabilities to Tangible Net       Greater than Zero and
Worth***                                      Equal to or Less than
                                              7.0:1.0

     ***Accumulated earnings of Borrower's
     Canadian and European subsidiaries
     are excluded from calculation of
     Borrower's Total Assets and Total Net
     Worth.
</Table>

BUSINESS SUPPLIES DISTRIBUTORS HOLDINGS, LLC

<Table>
<Caption>
            COVENANT                        COVENANT REQUIREMENT        COVENANT ACTUAL
            --------                        --------------------        ---------------
<S>                                   <C>                               <C>

(i)   Annualized Revenue to           Greater than Zero and Equal to
      Working Capital                 or Less than 43.0:1.0

(ii)  Net Profit after Tax to         Equal to or Greater than 0.15
      Revenue                         percent

(iii) Total Liabilities to Tangible   Greater than Zero and Equal to
      Net Worth                       or Less than 8.0:1.0
</Table>

         E. Attachment C-2 to the AIF is hereby amended by deleting such
Attachment C-2 in its entirety and substituting, in lieu thereof, the Attachment
C-2 attached hereto. Such new Attachment C-2 shall be effective as of the date
specified in the new Attachment C-1. The changes contained in the new Attachment
C-2 include, without limitation, the following:

"I. FINANCIAL COVENANTS:

PFSweb, Inc.

<Table>
<Caption>
                            Covenant
         Covenant           Requirement         Date as of     Covenant Actual
         --------           -----------         ----------     ---------------
<S>                         <C>                 <C>            <C>

(i)  Minimum Tangible Net   $24,000,000.00      09/30/02
     Worth                  $20,000,000.00      10/31/02
                            $20,000,000.00      11/30/02
                            $20,000,000.00      12/31/02
                            $18,000,000.00      01/31/03
                            $18,000,000.00      02/28/03
                            $18,000,000.00      03/31/03
</Table>

<PAGE>
SECTION 3. CONSENT. IBM Credit consents to the Proposed Acquisition subject to
the terms and conditions hereof (including, without limitation, Section 4
hereof).

SECTION 4. CONDITIONS OF EFFECTIVENESS OF CONSENT AND AMENDMENT.

         (a) This Amendment shall have been authorized, executed and delivered
by each of the parties hereto and IBM Credit shall have received a copy of a
fully executed Agreement.

         (b) IBM Credit shall have received a certified copy of the acquisition
agreement pursuant to which PFS will acquire all of IFP's interest in Holdings
for $332,000 and such agreement shall be in form and substance satisfactory to
IBM Credit.

         (c) IBM Credit shall have received an amended and restated Notes
Payable Subordination Agreement executed by PFS and the Borrower which agreement
shall not allow payment in respect of the indebtedness of the Borrower to PFS
("Secondary Obligations") if such payment would cause the total amount of
Secondary Obligations to be less than eight million dollars ($8,000,000) and
such agreement shall otherwise be in form and substance satisfactory to IBM
Credit.

SECTION 5. REPRESENTATIONS AND WARRANTIES. Each Loan Party makes to IBM Credit
the following representations and warranties all of which are material and are
made to induce IBM Credit to enter into this Amendment.

SECTION 5.1 ACCURACY AND COMPLETENESS OF WARRANTIES AND REPRESENTATIONS. All
representations made by the Loan Party in the Agreement were true and accurate
and complete in every respect as of the date made, and, as amended by this
Amendment, all representations made by the Loan Party in the Agreement are true,
accurate and complete in every material respect as of the date hereof, and do
not fail to disclose any material fact necessary to make representations not
misleading.

SECTION 5.2 VIOLATION OF OTHER AGREEMENTS. The execution and delivery of this
Amendment and the performance and observance of the covenants to be performed
and observed hereunder do not violate or cause any Loan Party not to be in
compliance with the terms of any agreement to which such Loan Party is a party.

SECTION 5.3 LITIGATION. Except as has been disclosed by the Loan Party to IBM
Credit in writing, there is no litigation, proceeding, investigation or labor
dispute pending or threatened against any Loan Party, which, if adversely
determined, would materially adversely affect the Loan Party's ability to
perform such Loan Party's obligations under the Agreement and the other
documents, instruments and agreements executed in connection therewith or
pursuant hereto.

SECTION 5.4 ENFORCEABILITY OF AMENDMENT. This Amendment has been duly
authorized, executed and delivered by each Loan Party and is enforceable against
each Loan Party in accordance with its terms.

SECTION 6. RATIFICATION OF AGREEMENT. Except as specifically amended hereby, all
of the provisions of the Agreement shall remain unamended and in full force and
effect. Each Loan Party hereby ratifies, confirms and agrees that the Agreement,
as amended hereby, represents a valid and enforceable obligation of such Loan
Party, and is not subject to any claims, offsets or defenses.

SECTION 7. RATIFICATION OF GUARANTY. Each of Holdings, PFSweb and PFS hereby
ratify and confirm their respective guaranties in favor of IBM Credit and agree
that such guaranties remain in full force and effect and that the term
"Liabilities", as used therein include, without limitation the indebtedness
liabilities and obligations of the Borrower under the Agreement as amended
hereby.

SECTION 8. GOVERNING LAW. This Amendment shall be governed by and interpreted in
accordance with the laws which govern the Agreement.

<PAGE>

SECTION 9. COUNTERPARTS. This Amendment may be executed in any number of
counterparts, each of which shall be an original and all of which shall
constitute one agreement.

         IN WITNESS WHEREOF, each Loan Party has read this entire Amendment, and
has caused its authorized representatives to execute this Amendment and has
caused its corporate seal, if any, to be affixed hereto as of the date first
written above.

IBM CREDIT CORPORATION                      SUPPLIES DISTRIBUTORS, INC.

By:                                         By:
   ------------------------------------        ---------------------------------

Print Name:                                 Print Name:
           ----------------------------                -------------------------

TITLE:                                      TITLE:
      ---------------------------------            -----------------------------

Business Supplies Distributors              Priority Fulfillment Services, Inc.
Holdings, LLC

By:                 as Managing Member
   ----------------
By:                                         By:
   ------------------------------------        ---------------------------------

Print Name:                                 Print Name:
           ----------------------------                -------------------------

Title:                                      Title:
      ---------------------------------            -----------------------------

Inventory Financing Partners, LLC           PFSweb, Inc.

By:                 as Managing Member
   ----------------
By:                                         By:
   ------------------------------------        ---------------------------------

Print Name:                                 Print Name:
           ----------------------------                -------------------------

Title:                                      Title:
      ---------------------------------            -----------------------------

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00049-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00049-of-00352.parquet"}]]