Many of us believe that by shopping at warehouse stores like Sam's Club, BJ's, and Costco we save money. We pay a membership fee in order to be able to shop there and then purchase in large quantities to yield a lower per-unit cost. Well, the per-unit cost may be lower, but our savings? Not so big.
A Harvard Business School study done about a year ago indicates that warehouse clubs may cost us more than they save us. It was an interesting study that I encourage you to skim before you head out to stock up on 50 rolls of paper towels or a 10-pack of cereal.