(1) reference is made to manufactured tobacco products manufactured or imported to sell at a certain price, as the basis for computing the tax, it is intended to mean the ordinary, customary or usual price paid by the consumer for each individual cigar, package of cigarettes, package of smoking tobacco or other tobacco product;

(2) the retail or selling price is referred to as the basis for computing the amount of stamps required on any article, it is intended to mean the ordinary, customary or usual price paid by the consumer for each article less the amount of tax added thereto; and

(3) when any articles or commodities subject to tax under this article are given as prizes on punchboards, shooting galleries and under similar circumstances the tax shall be based on the ordinary selling price of such articles.