I came so close to buying a 1991 850i for $5500 a week ago. I didn't do it because there were too many things wrong with it - the front bumper was cracked, the trunk was disassembled, the headliner was replaced by something out of a corner garage, the motor wasn't running right - with a Dinan chip and exhaust, it struggled to accelerate to 60 in eight seconds, the idle was fairly rough and unsteady, the batteries were toast, the MFD screen had a bunch of bad pixels, there were no service records whatsoever, there was a small dent on the rear quarter panel, the glovebox was missing its latch, the steering wheel squeaked, the coolant reservoir was low, the engine had oil varnish visible from the oil cap, there was a horrendous vibration that came from the rear end that increased with speed, it was missing two center caps on the wheels, the registration was two years out of date, and there was a bad Pentosin leak.
It was so beautiful though.