Who knows the specific purpose of Su Guo membership card?

Products that can be used to buy members will be cheaper, but it seems that eggs are generally cheaper, and there are some daily necessities, but they are rare (I don't think I have bought them. Otherwise, I won't buy it), and some wines will be cheaper ... If you are a member, you can open a SMS member, and 9 yuan (really speechless) will send you information about preferential products every month.

Some supermarket membership cards are still refundable (such as Trust-Mart, every store), but it seems that they are not refundable in Su Guo. I asked the shop assistants, and they said that there might be (just maybe) a lucky draw for points in the future ~

It's free anyway. I don't think it's a big deal to get one ~