(1) An application for a certificate, amendment of a certificate, or transfer of a certificate must be accompanied by a filing fee the commission may prescribe by rule. The fee must not exceed two hundred dollars.

(2) All fees paid to the commission under this chapter must be deposited in the state treasury to the credit of the public service revolving fund.

(3) It is the intent of the legislature that all fees collected under this chapter must reasonably approximate the cost of supervising and regulating charter party carriers and excursion service carriers subject thereto, and to that end the commission may decrease the schedule of fees provided for in RCW 81.70.350 by general order entered before March 1st of any year in which the commission determines that the moneys, then in the charter party carrier and excursion service carrier account of the public service revolving fund, and the fees currently owed will exceed the reasonable cost of supervising and regulating such carriers during the succeeding calendar year. Whenever the cost accounting records of the commission indicate that the schedule of fees previously reduced should be increased, the increase, not to exceed the schedule set forth in this chapter, may be effected by a similar general order entered before March 1st of any calendar year.