Sam's Club is a variation of Wal-Mart created by the same owner, hence the name.
This store is more like a warehouse, actually, where you can purchase your regular groceries in bulk at cheaper prices, similar to wholesale stores, which can be a big plus and saver for larger families in the area.
You need to sign up for a membership card in order to shop here. I'm not sure if there's an annual fee or not, but either way, it's well worth it if you're the type who likes to save (and shop a lot...).
Besides groceries, they also offer everything that Wal-Mart does: clothes, shoes, toys, video games and consoles, televisions, computers... just about anything you need, actually, but they also offer some of the not-so-common things, such as vending (food and drink) or bubble gum machines.
Overall, four stars. [more]