The think about those old Gottlieb games is that if they're broken, they're sometimes a huge pain to get going again with their edge connectors, leaky batteries, ground issues, etc. I think the reason they're cheap broken is that unless it's like Black Hole, Haunted House, Spirit, or a few others, the time, money, and effort spent fixing them doesn't work out to make it worth it most of the time. I got offered a non-working "The Games" about a month ago for cheap, had to pass on it though because I couldn't see driving 3 hours round trip + 5 to 10 hours fixing it just to have a game worth $500, my time is worth more than that.