Any retail seller, or motor vehicle dealer within the meaning of Chapter 5 of the Illinois Vehicle Code, who publishes or issues coupons for use by consumers in the purchase of specific items of merchandise in the retail outlet of the seller, or established place of business, and represents that presentation of a coupon permits the purchase of a specific item of merchandise for less than the regular price shall clearly state (a) the discount or (b) the fact that the coupon featured price is a “sale” price to which the presenter is entitled. No coupon shall be offered in connection with any retail sale of a motor vehicle.