1965 Valiant Convertible - WIW?

I have been out of the car buying scene for quite a while and was wondering what a '65 Valiant Ragtop 273, automatic is worth. It's got a good interior, runs and drives well, no major rot issues, needs carpet and one seat is slightly torn. Faded white paint. Light blue interior.

The guy selling it wants $3500. Is that fair? What would it be worth with nice paint, etc?