6-Above 8 yuan. A winery gives workers 10 ton of yellow wine produced by its winery as a welfare. The cost of yellow wine is 4,000 yuan/ton, and the sales price is 5,000 yuan/ton (excluding value-added tax). Therefore, it is concluded that the price of a catty of yellow wine is above 6-8 yuan, and the price below this price is blended wine. Yellow rice wine is one of the oldest wines in the world, and the quality of yeast koji determines the quality of wine.