Sam's Club is just owned by Wal-Mart. They are separate stores and there do require a membership fee like Costco. You can sign up at a store and enjoy the benefits right away... and they do have an online store. However, I bet this deal is one that is best taken on at a physical store.
Wow! If that Sam's club deal works... that would be awesome. Wish Amazon could price match that stuff... I don't like supporting Wal-Mart that much. =(
This seems like a wicked deal! Question though... is it worth the money for GoW3 and the Uncharted Series? They are about the only PS3 exclusive games I'm interested in currently...