In the absence of proof of the price of a competitor, under § 37-10-16 , the lowest cost to the retailer, or the lowest cost to the wholesaler, as the case may be, determined by any cost survey, made pursuant to § 37-10-12 , may be deemed the price of a competitor within the meaning of § 37-10-16 . Source: SL 1966, ch 157 , § 9 (2).