"a one owner machine"
That's a new one. It has had ONE "private" owner since it was operated for 30 years.
Reconditioned 8/10 would be worth $1600. Backglass is important as they commonly flaked. Check for playfield wear in front of the slings, and for some reason, this title suffered with planking - so check that as well. Make sure the "up post" mech is intact (under the playfield between the flippers). Displays are an easy fix if they are not worn out.
A very cool machine.