I have worked in a supermarket for many years. Generally speaking, supermarkets will not buy fakes, because buying fakes is fatal to supermarkets, but some suppliers are dishonest. In order to make money, you may experience the situation that suppliers collude with people inside the supermarket (especially those in the receiving department) and send fakes to the store regardless of the safety of consumers. I think you can buy the same goods and ask the store manager for compensation on the spot, usually 50 times the amount, provided that you remember to keep the evidence and don't let others dig up old accounts.