to section 1501 of title 31, United States Code, in the fiscal year in which the payment is due. (C) Prices fixed by Commissioner The Commissioner, in consultation with the Director, shall establish amounts to be paid by an agency and terms of repayment for use of a product or service developed under paragraph (3)(B), including any services or work performed in support of such development under paragraph (3)(C), at levels sufficient to ensure the solvency of the Fund, including operating expenses. Before making any changes to the established amounts and terms of repayment, the Commissioner shall conduct a review and obtain approval from the Director. (D) Failure to make timely reimbursement The Commissioner may obtain reimbursement by the issuance of transfer and counterwarrants, or other lawful transfer documents, supported by itemized bills, if payment is not made by an agency— (i) within 90 days after the expiration of a repayment period described in a written agreement described in paragraph (6)