They say Costco is like Disneyland for adults. Maybe it's the free snack samples or the thrill of being able to stock your pantry with five-pound bags of almonds and three-liter jugs of olive oil. But ...

Customers shopping in the home goods section of Costco. - Steve Proehl/Getty Images They say Costco is like Disneyland for adults. Maybe it's the free snack samples or the thrill of being able to ...