Costco can actually do quite a bit for your car, and one of its competitors, Sam's Club, has also gotten in on the automotive game. Certain locations are even willing to buy your used car from you.

Sam’s Club is offering over $15,000 off on some AMG models, but only for its current members.

Are you lusting after a hot new AMG vehicle? Happen to be a Sam's Club member? Well, step right up, because there are some ...