SDCL § 37-2-29: Listing different motor fuel prices for cash or credit--Violation as misdemeanor.

Any person advertising the sale of any motor fuel by means of any sign, placard, or billboard in which any product price is specified shall state on such sign, placard, or billboard whether such price is a cash price or credit price, if such person sells or offers to sell such motor fuel to the public at different prices for cash and credit. A violation of this section is a Class 2 misdemeanor and each day of violation constitutes a separate offense.