I think your offer of $4K plus for a car that would need to be gone through front to back to be even considered road worthy was more then fair. If it's a disc brake car those 4 piston calipers are likely seized, or so twisted up in their bores they would need to be sent out for rebuild. I see power windows, tilt telescopic steering column and a bunch of wires hanging down under the dash. My guess is there is a no-start situation and they tried to bypass it hence the reason he doesn't want anyone to mess with it.
Sorry the guy is confused, or just greedy and doesn't realize that the vehicle is not considered a running and driving car, and therefore can not be priced as such.
When I bought my wagon 10+ years ago it cost me $1200 missing the original motor and tranny, plus another 8-900 to transport it, then a few hundred more to bring it over the US/Canada border. My wagon is 99.5% rust free and I thought I got a good deal on it....contrary to some of my friends pronouncements. ;)