Haha, back to the future. Silly but this made me chuckle.
I'm not saying you couldn't get it for that price but I personally think it's worth what he's asking. All depends on his personal circumstances, it seems he sells it with a heavy heart so probably won't let you pull him down much, but he has had it up for sale for a while so he might be quite happy to haggle down to that price. Worth trying I think, at the worst he can say no, he won't kill you for asking (hopefully).
Take it for a drive and see what you think, if you think it's worth it you might not want to haggle too much.