Has anyone ever heard of or used this site MyGroceryDeals.com? It looks a lot like The Grocery Game, but it's free. You can look at sale prices of items by category or by specific store in your zip code.
One thing it does not do is match coupons with current deals. I may try to start using it to compare a couple of stores' sale prices instead of combing through the paper ads and see how it well it works!