Hi!! I was wondering about gray market cars. How can you tell a gray market car? Is it the model number? My friend told me he wants to buy one and can't figure out what it's worth. It's a BMW model C230 Sedan 4D and I think he's paying $10K less than list. Also it's to be shipped from Germany and he doesn't know what he has to do to get it through customs. Any help would be greatly appreciated.