(a) It shall be unlawful for any person, firm, or corporation engaged in the business of selling any type of merchandise in the State of Georgia to promise a consideration, either cash or otherwise, to a buyer of such merchandise for providing the names or other information relative to other prospective purchasers of such merchandise, unless the promise of such consideration is contained in the contract of sale between the seller and the buyer.

(b) Any person, firm, or corporation violating subsection (a) of this Code section shall be guilty of a misdemeanor.