There are great deals to be had at Costco, Sam's Club, and BJ's, but you still have to keep a close eye on the bottom line. Use these tips to make sure you're saving (and not losing) money when shopping at big-box stores.
By Jonna Gallo Weppler
Just as in a traditional supermarket, the best buys are around the perimeter. For instance, organic milk, eggs, and sliced bread are often substantially cheaper at a club store. The center section is where random impulse buys lurk, like pajamas, toys, and books.