According to the principle of shop pricing, the price difference ratio between the first floor and the second floor of the shop is 1:0.55, that is, the average price of the first floor is 100% and the average price of the second floor is 55%. Why should we price it like this? From the commercial value of shops, the first floor is close to the main road, and the flow of people is straight, which brings huge consumption, so the commercial value of shops is high; The shops on the second floor need to be connected by corridors and escalators, which will inevitably affect the flow of people, so the commercial value is greatly reduced.