402065 04: Mary LaRocca offers a sample of Libby’s Vienna Sausage in a Costco Wholesale store March 8, 2002 in Niles, IL. Warehouse retailer Costco Wholesale Corp. has reported higher quarterly profits as the promise of bulk goods at bargain prices resonated with consumers in the U.S. recession. Warehouse retailers charge customers an annual membership fee, typically $35 to $45, to shop at clubs that offer deep discounts on bulk quantities of items like food and household cleaners. (Photo by Tim Boyle/Getty Images)