A couple of years ago, back when Pin A Go Go was in Dixon, California and shared the fairgrounds with the big British car show on the Sunday, I walked the car show with my "game buying" budget still intact. I kept seeing car after car with asking prices well below what I would have paid for a nice B level Williams or a lightly used Stern Pro. It took a lot of will power to walk away from them, mainly because I have spent years dealing with Lucas electrical systems on my Triumph motorcycles and we already have 5 pre '68 cars in the household.
Seriously, here in Southern California, classic cars are nearly as abundant as the sunshine and pretty affordable if you know where to look (or you're THAT house where everyone just knows you'll be interested in a project car-they come to YOU) It's pretty amazing that a running, driving classic car (project or shall I say "players condition") is less money than a pinball machine.