Mass. Gen. Laws ch. 271 § 29
Whoever sells, exchanges or disposes of any property, or offers or attempts so to do, upon a representation, advertisement, notice or inducement that anything other than what is specifically stated to be the subject of the sale or exchange is or is to be delivered or received, or is in any way connected with or is a part of the transaction, or whoever gives a stamp, coupon or other device which entitles a purchaser to demand or receive from a person or company other than the merchant dealing in the goods purchased or the manufacturer thereof, any other property than that actually sold or exchanged, or whoever delivers by any person or company other than the merchant dealing in the goods purchased, or the manufacturer thereof, goods, wares or merchandise upon the presentation of such stamp, coupon or other device, shall be punished by a fine of not less than ten nor more than five hundred dollars.
Mass. Gen. Laws ch. 271, § 29