Just watched a news piece about food ads, how you can take the food ads into Walmart, show the cashier the price for the item at another store, and they will meet the price of their competition.  So even though an item you need is on sale at one store, Walmart will sell it to you at the lower price.  Lady takes in all the food ads into Walmart and gets the sale prices from the other stores!  I've done this before with Lowe's (they not only meet but give you 10% off that price)but never for food.  Tried to get a link for it but couldn't copy it but you can go to abcnews.com, go to videos and it is called Price Matching:Top Retail Secrets.