I paid $2800 for mine a couple years ago. I'd say it's a 7/10. Near-perfect backglass and perfect plastics. Cabinet is faded, but not scratched. Playfield is very good, with only minimal wear in a handful of spots. Plays perfectly. I bought one as a KISS fan, but then discovered I loved pinball, so it was the one that started my addiction.
Here's mine in action and closeups of the playfield after: