Unless an item goes up significantly, I don't usually notice the increase in price. I try to do most of my shopping online. It's more convenient.
I'm not a big Wal Mart shopper anyway. Both Wal Mart and Target offer free shipping if you spend so much, so it's worth it especially if you have to drive mile and miles to get to a local store.
Also, there are rebate companies like Ebates that give you cashback if you shop online at stores that partner up with them. Wal Mart is one of them.