Small household appliances are distributed to customers in the form of prizes and cannot be regarded as sales of general commodities. Generally, selling supermarkets needs to bear part of the tax. There is no sales amount for the prize. So the supermarket's approach is wrong. So there is a difference between the supermarket prize and the welfare lottery prize. The former is a commodity and the latter is a currency. The two cannot be equated, but there are differences. Even if taxes are to be collected, it is reasonable to collect taxes according to 400 yuan. At least the total value of these commodities should exceed 6,666 yuan. Otherwise, you can directly complain to the mall.