The department is authorized to charge reasonable fees for the approval of vehicle equipment and testing devices under the provisions of section 4104 (relating to testing and approval of equipment) except that:
(1) fees for other testing shall be based on the cost of operating the department equipment approval program and shall not exceed similar fees charged by the American Association of Motor Vehicle Administrators; and
(2) no fee shall be charged for approval based on certifications of the American Association of Motor Vehicle Administrators.