All interest, as well as fees and other charges calculated on a per annum basis, shall be computed for the actual days elapsed, based on a year of 360 days. Each determination by Lender of any interest, fees or interest rate hereunder shall be final, conclusive and binding for all purposes, absent manifest error. All fees shall be fully earned when due and shall not be subject to rebate, refund or proration. All fees payable under Section 3.2 are compensation for services and are not, and shall not be deemed to be, interest or any other charge for the use, forbearance or detention of money. All fees payable under Section 3.2 shall be in addition to any other fees, costs or expenses payable pursuant to any Loan Document and each of the fees described in Section 3.2 constitute part of the Obligations and shall be deemed earned in full on the date when the same is due and payable hereunder and shall not be subject to rebate or proration upon termination of this Agreement for any reason. A certificate as to amounts payable by Borrowers under Section 3.4 , 3.6 , 3.7 , 3.9 or 5.8 , submitted to Borrower Agent by Lender shall be final, conclusive and binding for all purposes, absent manifest error, and Borrowers shall pay such amounts to the appropriate party within 10 days following receipt of the certificate.