Ключевые слова: advertisement, bargain, bestseller, big, business, buy, campaign, commerce, commercial, communications, concept, consumer, cost, coupon, crash, customer, deal, discount, giveaway, guarantee, idea, improvement, markdown, marketing, money, occasion, off, offer, percent, price, price tag, promotion, purchase, rebate, reduction, refund, retail, sale, seller, service, shop, shopping, special, store, trading,