In p>222, the prices of corn, yellow grain and red grain will be different. According to the relevant public information, the average domestic price of corn in 222 is a kilo in 1.1 yuan, the average domestic price of yellow grain refers to millet is 6.5 kilo, and the average domestic price of red grain refers to sorghum is 1.8 kilo. In 222, the purchase prices of three kinds of grain are different, so the prices of corn, yellow grain and red grain are different in 222. Price is the transformation form of the exchange value of goods in the circulation process. In the process of economics and business, price is a value figure set for goods, services and assets in the form of money. In microeconomics, price is one of the important variables in the process of redistribution of resources between demand and suppliers.