Every person, firm or corporation who shall sell, at retail, within the Village of River Grove any commodity used as human food or used in the preparation either in part or as a whole for food for human consumption, shall be and is hereby required to mark upon the package or other container of such commodity or article sold, the amount in pounds or other unit of measurement together with the price per pound or other unit of measurement and the total cost to the purchaser of the contents of such package; provided, however, that any article sold in its original package as purchased by such dealer having said information thereon, or when a statement or bill, showing said information accompanies such package, such package need not be so marked by the person, firm or corporation retailing same. (Rev. Ord. 1939)