Mich. Comp. Laws § 445.103: Unlawful trade practices; wholesale, use of term.

Sec. 3.

It shall be an unlawful trade practice for any seller or transferor of any goods, wares, or merchandise to advertise, claim, or imply that any sale or other transfer of goods, wares, or merchandise is a sale or transfer at wholesale unless such sale or transfer is made to a transferee for resale and unless such sale or transfer is not subject to the provisions of the sales tax law, being Act No. 167 of the Public Acts of 1933, as amended or hereafter amended.