I keep a couple of magnetic notepads on my refrigerator. I normally know which store has the best prices but I can't always remember what I need to buy when I get there! (That happens as you get older, you know!) I have one notepad for Wal-Mart, one for the dollar store, one for my local grocery store, and one for Goodwill or my local consignment shop. Never will I spend $7 again for a shower curtain liner because I forgot to pick one up at the dollar store!