Last night I did a service call for a couple to fix their neglected machine. They had no idea people still made pinball machines. When I mentioned The Beatles and its price tag, they didn't bat an eye and were mildly interested. They were well off with their kids out of the house and looking for toys to buy. (Also it was a lucrative service call for myself and now I'm trying to find them a Pac-Man arcade)
People are really underestimating how many rich people think pinball is a cool toy, and overestimating how many of these things Stern are actually building. Finding 100, 250, etc. rich people looking for toys isn't as hard as some people are making it out to be.