Yes, a huge difference between Costco and Sam's Club (we have both here in California) is that Costco is known for paying and treating it's employees very well. And it shows. They have fantastic customer service and the environment in the store is very different than a Sam's.

I normally hate shopping big box warehouse stores but I flipping love Costco. They just seem to do things the right way and in turn, they have incredible customer loyalty which seems to be missing from Sam's and Wal-Mart.

Costco is to Sam's as Target is to Wal-Mart.