So if one store charges a price for a pair of sports shoes, the consumer could go to the store along the street to compare prices for the exactly the same item, and buy the cheaper of the two.

Suppose you eat rice every day. But one day you go to the store and discover that the price is more than you can pay.

For example, you think one of Huaqiao Lu store to buy something, you can enter the store through the system inside and see the goods inside, and even the price card.