Fees and other charges for service shall be paid in accordance with the following provisions unless otherwise provided in the cooperative agreement under which the service is furnished. Upon receipt of billing for fees and other charges for service the applicant shall remit by check, draft, or money order, made payable to the Agricultural Marketing Service, U.S.D.A., payment for the service in accordance with directions on the billing, and such fees and charges shall be paid in advance if required by the official grader or other authorized official.