(a)  The director of the department of revenue, or his or her designee, shall collect a fee of four dollars ($4.00) for each certificate of inspection issued, and the monies received shall be turned over to the general treasurer to be deposited in the general funds of the state.

(b)  Unused inspection stickers purchased by inspection stations shall be re-purchased by the state if returned in good condition to the director of the department of revenue or his or her designee within three (3) months of the inspection year for which the sticker was issued.