In the absence of the filing with the secretary of revenue of satisfactory proof of a lesser or higher cost of doing business by the wholesaler making the sale, the cost of doing business by the wholesaler shall be presumed to be four percent of the basic cost of cigarettes to the wholesaler, plus cartage to the retail outlet, if performed or paid for by the wholesaler, which cartage cost, in the absence of the filing with the secretary of satisfactory proof of a lesser or higher cost, shall be deemed to be one and one-half percent of the basic cost of cigarettes to the wholesaler.
SDCL 37-10-10