Like I said, it didn't bother me too much as it was a pretty cheap car. If my truck rego wasn't due I probably wouldn't have taken his offer and just parked it back out the farm till I had more time to do something with it. I realise that every buyer tries to screw you down on price. If they're buying from you it's worth $1000 and has a heap of problems. If they're selling it's worth $3000 and contains a whole lot of rare parts. As the saying goes "Sell a car, meet a dickhead."
The main point I'm trying to make is that it's probably the reason why a lot of these old cars are left to rust. People get attached to these vehicles and if it's going to go to someone else you want to see it become someone elses baby, not just a quick easy way of making cash for some guy. If you can't guarantee that then you might prefer to just leave it where it is until it's too late.