Thank you very much @dswigle.
I compared the prices already, and some which were on promotion sale (only for a period of time) much cheaper than the other stores. Mom and I chose them and only bought we needed. Could you guess the price of all the things we bought that day?
And we went there again last saturday and guess what? Mostly the prices were back to their old higher prices so we were so lucky.
You made me curious about how the store like this looked like in the US