it's a 1989 M3 with 123000 miles, Silver with Black interior. The exterior looks brand new, it has 16" Mille Miglia wheels, the interior has the usualy cracks in the leather, but no tears. It runs good, idles a little rough, what could that be? It is in otherwise relatively great shape, but the guy wants $14000 and isn't going down. Blue book is $9560, but I understand the enthusiasts value. It looks great, but it's definately not worth $14000 at this point. Any insights as to its value?