$2,500 Tops... and make sure you have plenty of $$$ to get this quarter century old baby in shape for the <long haul>...What would you pay for a bike like this?
I would buy a modern motorcycle if I were looking for something to actually ride. If you want something to tinker with (and you WILL be tinkering!) this is your ride. I see you have a KTM (keep two mechanics) and an old skool Kaw, this old Goldwing may be right up your alley! Good luck!