Picked up a Sky.Line for $150 bucks today. The only thing that is not repairable is the back glass. I didn't see any online. If you were me, would you part it out if a glass in not available?
Very rough shape, the cabinet of course can be repaired. I'd say 1/4 of the lamps worked and the ones that did work were dim. Amazingly though - everything functioned! You could actually play a game! I offered 100, got on the phone who was the owner, he talked me up to 150. Then I found out he is a professional gambler and makes a living at it - got 50 bucks more out of me.