Here is one that a pinsider was selling before Allentown for $600 that I bought. Playfield is excellent for this game, really nice, mostly mylar. The backglass has/had a bubble spot on the ''V"" that was sealed.
It had a gremlin or two, but it came with a new niwumpf CPU board too, and we played this in my hotel room at the show. (Gremlin was a few connector pins were bad)
Everything works 100%, and if someone offered $1200 for it, I probably wouldn't sell it. So for what it's worth, that's what I value it at. Often times I ignore what people say a game is worth, based on how often I myself come across it. When I found a Gottlieb PUNK!, It was in poor to fair condition overall, and a buyer bought it for $3,000. That same buyer also knows I would buy it back in a minute for $3,000, yet the price guide probably lists that game for under a grand. Good luck finding one...
Volcano is a unique, fun, classic pinball from 81'. It had some pretty unusual features.
Gottlieb from this era always tried to do outside the box/neat gimmicks on their games, and I applaud them for that, big fan of this early stuff. They lost me big time in the system 80b years, however.