Well, as you guys predicted, I bought my 2nd machine yesterday. I can definitely see my addiction growing. I found a Pinbot that seems in very good shape although it has a few electronic problems. Playfield is really nice and the only wear I notice is at the eye socket kickbacks. The cabinet is pretty nice with a few scuffs and scratches but overall quite good for its age. Back box is nice too and the back glass seems almost blemish free. There's Mylar covering almost the entire playfield (is that common?) but the Mylar is in good shape too.
Electrically, there's some issues. There's a problem with the credit button not registering which seemed to fix itself when I began tracing it back so maybe an open wire somewhere? It started working and I was able to play a few games until it started acting funny on startup. Goes into attract mode fine and tries to start a game but doesn't kick out a ball and lights on left target bank just keep blinking. I'm going to go through the switch test to see if something is stuck on. Wish me luck!