nope, the savings out there are real (although exaggerated by some)but you gotta pay every year to shop there right?! Wouldn't the cost of the membership offset the savings?!
Problem with a place like Costco or Sam's Club is that you need to make sure you know what you want to eat as you have to buy in bulk most of the time. Buying Tuna? I think the pack at Sam's Club brings 12
I paid for a Sam's Club membership to buy HP Touchpads when they were having that crazy fire sale and made about $1,200 profit just off of that.