It's no secret that warehouse stores can offer compelling value. The markup over wholesale prices averages about 14%, according to Michael Clayman, editor of Warehouse Club Focus, an industry newsletter. Compare that with a 25% to 50% markup at conventional retailers, and you're talking substantial savings.

There's no guarantee that every item on your shopping list is a better buy at a warehouse store, however. In some cases, your neighborhood grocer or the local Wal-Mart can top prices at Costco, Sam's Club or BJ's.

Are you a savvy shopper? Test your know-how with our quiz and see if you can tell a good deal from a bad one.

June 2011
Written by John Miley