204 C.M.R. 6.03
(3) A copy of each wholesaler's price list shall be furnished to each retailer prior to the month in which the prices and discounts set forth in such price list are to be effective. The original of the price list shall be filed with the Commission no later than 5:00 p.m. on or before the fifth day of each month and only those prices and discounts set forth therein, or amended in accordance with the provisions of 204 CMR 6.05, shall become effective on the first day of the calendar month following the filingofsuch price list and shall be in effect for that calendar month only. A new complete price list shallbe filed by wholesalers each month.
(5) Each price list shall contain, with respect to each item, the exact brand or trade name, size of containers, nature of contents, age and proof (if stated on the label), number of containers in a case, price of a container, all discounts and net price of the item to retailers.