Whats it worth? Nice 1975 Dodge D100

It might be. But the middle of $3500 and 10 is substantially less than the middle of $7K and 10. If the guy's too wound up to know how to deal that's also not your concern. If you're for real and have cash, go see it in person, bring cash, and show it to him. My impression is he's gotten a dozen emails and calls from kickers. Show him you're real, and work him on the price. Worst that happens is you actually pay what he wants.