Quoted from hoov:

Wrong lockdown bar for that game - should be the narrow bar with the knobs. You could find one of those. It looks as if they put new rubber rings on the playfield without cleaning the dirt - will need shopped - is about average for games from that era - most I've seen have that flipper drag. The backglass has minor flaking and a repro will set you back $295 + shipping if you choose to go that route. The cabinet doesn't look to great on either side - is any of that moisture related and did it weaken the wood at all? The front of the cabinet looks ok from what I can see.
The game is playing - that's good.
That's the bad thing about seeing a game like that - I would want to see the inside of the game and the head to make sure there's no wiring hacks and even if you bring a drill with you to drill the locks out you would have to have his permission.
Just sit back and see if he takes your lower bid.