Either pinhead52 or NicoVolta recently fixed up a King Pin and sold it privately. It looked superb. Maybe they can chime in with recent valuation.
I found my King Pin on Craigslist for $400, but that was in 2010. It was my first EM and still one of my favorites. King Pin’s five-ball play has one of the best progressive rulesets. First time you get all the drop targets down, the traveling light gets lit for 5k points. You have to get all the drop targets down a second time before special is lit. Even then, the special light alternates. Great, great game.