A seller may advertise the price as including the tax or that the seller is paying the tax, subject to the following conditions:
(1) Unless the advertised price is one in a listed series, the words "tax included" are stated immediately following the advertised price and in print size at least half as large as the advertised price;(2) If the advertised prices are listed in a series, the words "tax included in all prices" are placed conspicuously at the head of the list and in the same print size as the advertised prices;(3) If a price is advertised as "tax included," the price listed on any price tag shall be shown in the same manner; and(4) All advertised prices and the words "tax included" are stated in the same medium, be it oral or visual, and if oral, in substantially the same inflection and volume.