The board of supervisors of the county shall establish a scale and method of collection of fees, to be paid for each certificate which is provided for in this chapter. The scale of fees which are established for the certificates shall be based upon the approximate cost of the inspection, sampling, and testing which is necessary to the certification of the percentage of the soluble solids in each lot or load of grapes. The certification fee shall be paid by the person that accepts delivery of the grapes. One-half of the fees may be deducted from funds owed to the person who delivered the grapes.