The Commissioner shall establish the amount to be paid by the users under this paragraph, including the costs of any services or work performed, such as any appropriate upgrades, maintenance, and associated direct and indirect administrative costs, in support of carrying out the purposes described in this section, by reimbursement or in advance as determined by the Commissioner. The amount of such prices shall be periodically adjusted by the Commissioner to ensure that amounts collected are sufficient to fully offset the cost of the administration of this section.