Water + alcohol + pigments are as cheap as they can be. If it is made from pure grape juice in China, you can roughly calculate the cost. Grapes cost 3 yuan per catty, and a bottle of 750ml wine also needs 2 catties of grapes, plus 1 yuan for auxiliary materials, bottles, and simple packaging, plus labor costs, transportation costs, etc., which means it will cost at least 10 yuan. If it is a well-known foreign production area, it will be cheaper, but it will become more expensive in China.