Regarding the traditional shopping problem, what is the price increase of middlemen?

Assuming that the manufacturer produces 654.38 million pieces of goods at the cost of 10 yuan and directly sells (for example, directly sells to Carrefour) each piece of 20 yuan, then the purchase price of Carrefour is one piece in 20 yuan.

But if the manufacturer sells it to the big wholesaler A, the price will remain the same, and it will still be 20 yuan. The big wholesaler A doesn't retail, but sells it to the intermediate wholesaler B, and each wholesaler adds 10 yuan to become one in 30 yuan. Wholesalers still have to make money when they sell to small wholesaler C, so every time they add 10 yuan, the price becomes one in 40 yuan. Small wholesaler C sold it to retailer D, and it became 50 yuan each. Retailer D had to increase the price in order to make money, so it became 60 yuan, that is, the price of goods on the market.

Manufacturer->; a-& gt； b-& gt； c->； D

Many intermediate steps are omitted in big supermarkets, and his purchase price is very cheap, but his price is not simply 20+ 10 yuan, but it is usually similar to the market price, or it may be a little cheaper, for example, in 55 yuan. 55-20=35, which is the huge profit he generated.

Manufacturer->; supermarket

The data is just an example, not the real situation.