Okla. Stat. tit. 68, § 68-328: Sales at less than cost; penalty

a. It shall be unlawful for any retailer or wholesaler, with

intent to injure competitors or destroy or substantially lessen

competition, to advertise, offer to sell, or sell, at retail or

wholesale, cigarettes and tobacco products at less than cost to such

retailer or wholesaler, as the case may be. Any retailer or

wholesaler who violates the provisions of this section shall be

guilty of a misdemeanor and be punishable by fine of not more than

Five Hundred Dollars ($500.00).

b. Evidence of advertisement, offering to sell, or sale of

cigarettes and tobacco products by any retailer or wholesaler at

less than cost to him as defined in this act shall be prima facie

evidence of intent to injure competitors and to destroy or

substantially lessen competition.