Mich. Comp. Laws § 445.318: Charging higher price than price displayed on item; violation.

Sec. 8.

(1) A person shall not knowingly charge or attempt to charge for a consumer item that is subject to section 7 a retail sale price that is higher than the price displayed for that item.

(2) It is not a violation of subsection (1) to charge a total price for a consumer item that is subject to section 7 that is less than the price displayed for that item.

(3) It is prima facie evidence of a violation of this section if a price a person charges or attempts to charge for a consumer item that is subject to section 7 is established by electronic identification or calculation by an automatic checkout system and that price exceeds the price displayed for that item.