For the purpose of this subchapter, the following definitions shall apply unless the context clearly indicates or requires a different meaning.
AUCTION SALE. The offering for sale or selling of personal property to the highest bidder or offering for sale or selling of personal property at a high price and then offering the personal property at successive lower prices until a buyer is secured.
NEW MERCHANDISE. Any merchandise not previously sold at retail.
(SDCL § 37-14-2)