Agree to disagree. If there was no other way to play it I believe boards like Rastan would go for $1,000+ easy. Imagine how ichy you would be to play them again after 30 years if you hadn't had that mame satisfaction. There would be way more people collecting boards and running on superguns.
I would try to buy a house with a basement or similar area just to house PCBs if there was no mame. With mame I actually prefer not to own PCBs for the most part now because of all the space they take up and cost (even if they were cheaper) but if it was the only way to "own the games you grew up with" I'd be a PCB maniac.