This has been listed for sale for coming on 3 years. The wording has changed with a couple of the renewals, I think it might have had the "works perfect, it just needs a fuse" for a while.
http://www.usedpei.com/classified-ad/Sterns-First-Pinball-machine-possibly-1977_17198671
Also, there's a pawn shop in town that friends and coworkers keep telling me I have to visit because they have a couple pinball machines. I didn't get around to it for the longest time, because I did not expect anything worthwhile there. I finally dropped by to check the place out. There was a BTTF in sorry sorry shape. Most lights were out, plastics missing or broken, parts hanging limply broken on the PF, which looked like someone had emptied an ash tray onto. Miserable problems with the sound, it was definitely on it's way out. Flickering display, also on it's way out. I asked how much the asking price was. He would consider an offer of $3,000. I said there was no way anyone who knew anything would pay that. He said it was worth every cent, that's what they sell for on Ebay.