I'd take Sam's Club over Costco any day of the week.
Sam's is a "good value" shop. I always find bargains in our local Sam's Club store.
We don't have a Costco here in Alexandria, la. or anywhere close to us. I have been inside a Costco store while traveling but I prefer Sam's.
Sam's offers a vast variety of goods as well as food, furniture, books, and office supplies.