1966 Valiant Value

We might be able to help better if we knew what the sale price was to him 10 years ago, what he's asking now, and what your offer was. As everyone else has said, it's tough to do value with no photos and not a lot of info. Some details that would help are:

Current mileage
Engine/tranny/rear end condition
More details on the body condition
Tire condition and age
Other parts of the interior (headliner, carpet, door panels, dash)
A better list of what works and what doesn't

I'm sure others will chime in with their thoughts, but this list is a good starting point.