There's no denying it. Pinball is becoming a hobby for people that have A LOT of disposable income.
People may not like my opinion on this, but I think one of the biggest problems in this hobby are the hoarders. If you have a 20 machine collection and you play them like crazy, good for you. If you have a 20 machine collection you barely play and another 10 machines that have sat in some storage container for 8 years because you'll get around to fixing/shopping them some day (but you honestly never will), or they're there solely because you're out of room, please sell the damn things. Please get them into the market which already has crazy demand which is part of the reason why machines are so expensive.