1, promotion means that the price set by the merchant will definitely be higher than the price at the time of purchase, but the profit from it will be reduced.

2, erect the impression of good quality and low price in the minds of consumers! For example, the newly opened hypermarkets (Wal-Mart (slogan: low price every day, you said that he can't make money, and the sales volume is the highest in the world), Carrefour, Tesco, Trust-Mart, Gome and Suning) promote sales when they open stores, just to have the influence of the reserve price! (This is the most important point)

3, the original price1a commodity in 0 yuan, can sell 10 a day. After the promotion, you can sell eight yuan, but you can sell 15 yuan, so you can make a net profit of 20 yuan! ! ! !