The price difference refers to the futures price difference of different grades, different delivery months, different commodities and different delivery locations. It also refers to the price difference of the same commodity due to various conditions, such as wholesale and retail price difference, regional price difference and seasonal price difference. The difference between buying and selling goods is the main part of some businessmen's profits. The reasons for the price difference are also complicated. For example: different geographical environment, different supply and demand, different cultures, etc.
It can be said that everything in the world affects the existence of the price difference more or less. And mastering the law of price difference seems to be a necessary condition for businessmen to make profits. The price difference sometimes manifests as a premium, and sometimes it is a premium. Hedging profit is a kind of market trading method that makes use of the price difference between futures contracts to make profits. The key factor of arbitrage is the change of price difference.
Simply put, the price difference is the net profit obtained between the sale of goods. For example, when a merchant receives a commodity at a price of 100 yuan, when it is sold in 200 yuan, the merchant will make a profit of 100 yuan, and the middle 100 yuan is the price difference.