i had the sense he wanted what he wanted .. but he was at $13.500 back then. $10.500 now. again, i am cool --sellers prerogative to seek all they can. fair price is whatever two reasonable people agree on in good faith in the end.
If its been outside another year, my offer ain't $7K today. that had a $1,000-1,500 premium over what I thought it was worth as it sat. oh, the buyer premium offer was a one-time incentive that expired when he blew me off. i'd still be a bit above your "unmade offer", but not much
the problem is its rusting "inside out". in my experience that means there's more rust than you can see and also that you can't remediate easily/cost effectively. And if people have been fiddlin' with the powertrain (engine and/or tranny-clutch) Stan built, some of the car's appeal diminishes
Five digits will be tough to get for him. I sincerely hope he does get whatever he thinks is fair and it settles into a more comfortable life without us seeing it every couple years for sale.