So first of all, the first point is that even if the merchant says it is small profits but quick turnover, it will not be true. His profits are rich.
Second, attract you and bind customers through the discount of membership card. Suppose there are two cake shops, one is called 86 degrees and the other is called 87 degrees (haha). If you have a membership card of one of them, you can get points or discounts when you buy things, then you will definitely want to go to that one with the same price and similar taste, because you are a member and you have certain discounts. This may be because of the small interests of a few dollars, so that you can choose the business where your membership card is located for a long time.
Third, joint sales, it seems that the eggs in the supermarket are cheaper than those in the outside market, and aunts go to the supermarket to queue up to buy cheap eggs early in the morning. Anyway, they all went to the supermarket, and the toothpaste and toothbrush at home were gone. I bought some daily necessities and bought them together in this supermarket, which is convenient and easy. A catty of eggs, the supermarket may lose a few cents, but a toothbrush may earn a few dollars, how can it lose? Effectively improved popularity.