9889.19.  The director may charge a fee for lamp and brake adjustment certificates furnished to licensed stations. The fee charged shall be established by regulation and shall not produce a total estimated revenue which, together with license fees or certification fees charged pursuant to Sections 9886.3, 9887.2, and 9887.3, is in excess of the estimated total cost to the bureau of the administration of this chapter. The fee charged by licensed stations for lamp and brake adjustment certificates shall be the same amount the director charges.