a good place to determine market value, because as we all know many people fish for buyers at the right price because the ads are free. Market value is pretty elusive, but is somewhere between what you'd find an M6 selling for at a used car lot to the prices in Roundel. It is always what you'd pay on a personal level for a car. Undoubtedly, an 88 M6 is worthy of this price with all records and low mileage (sub 40K) and impeccable condition. Just my opinion. Regards, Chris