There's another co: autosatinvoice.com that is essentially the same thing. I'm not sure what states they all service, but we used them once. My husband has been in the auto industry for a long time and said the Chevy dealership he worked for was signed up with the local Costco. The pp is right- the dealer has to be signed up w/ them. I'm not sure what the Costco price is either. If it is minimal and the dealer is close, you will get a good deal. If you have to pay even a couple hundred for their program, it's a rip off. You can still get a good deal w/out it (especially w/ the way the car market has been.) It just will take time- beating the dealer down to a good price.