Any retailer who shall, in contravention of the policy of the Unfair Sales Act, advertise, offer to sell or sell at retail any item of merchandise at less than cost to the retailer as defined in this act; or any wholesaler who shall in contravention of the policy of the Unfair Sales Act, advertise, offer to sell, or sell at wholesale any item of merchandise at less than cost to the wholesaler as defined in the Unfair Sales Act, shall be guilty of a misdemeanor and upon conviction, shall be punished by a fine of not more than Five Hundred Dollars ($500.00).