I picked up my machine yesterday for $175. Not cheap, but I think it's within reason for a machine that looks pretty nice.
Sideart is nice and only has a small blemish on one side, T-molding looks good and still has color, has original functioning controls. I was pretty excited it had the original wooden shifter.
Aside from some hastily-tested non-functioning upper speakers, I only have one issue with it...and it was something the seller was upfront about: The screen offsets to one side after continuous use. Once it's turned off, the problem corrects itself, only to reappear later. I tried to get a photo of it this morning, but all I was able to come away with was this: Note the bottom left side and how the road border and grass are starting to bend upwards...
It gets to the point that it almost pushes the screen halfway across. I can't tell if it's a graphical glitch or what. The monitor is super bright, clear, and has no real imperfections to speak of. I'll have to get a better photo representation of it later this evening.
The seller told me he bought the boards off eBay about 6 months ago and they were refurbished, and they appear to function as expected, but I dunno if that would have any bearing on what I'm seeing. I wonder if reseating the chips would help at all.