Won't start could be anything. But most of the stuff is pretty simple to fix: carbs ignition, fuel supply, plugs, wires, plug caps.
Bring a compression tester with you. If you have compression and it does not sound funky when you kick it over, it's probably worth a risk. That said, a non-running bike is still non-running. Basically it is an assembled basket case.
It is also a 650. Not many parts in the US, at least major parts anyway. Alternator is probably a grenade. That's a $600 fix right off the bat. I'd start at $1000 and wave the cash in his face. My approach for something like this is I am buying the sidecar and the bike is a throw-away.
I'm no expert on older Urals. Was the tele front end used on sidecar rigs in 1996? This might be a bitsa or older bike registered as a '96.
Proud member of the Peanut Gallery
2000 Ural Tourist
40 Pilots, 122 Mains
Before you say something stupid, always ask yourself, "What would Harpo say?".