the price at which the goods were previously supplied or offered to be supplied by him For the purpose of subregulation (1), "the price at which the goods were previously supplied or offered to be supplied by him" means the lowest price at which the goods or goods of the same description were supplied or offered to be supplied by him in the ordinary course of trade or business on the same premises during the continuous period of thirty days immediately prior to the date of commencement of the supply or offer to supply goods at cheap sale price. PU(A) 424/1987 - TRADE DESCRIPTIONS (CHEAP SALE PRICE) REGULATIONS 1987 6. Indication of price.