My god, have you looked up the price of an Amiga on eBay in response to this thread? I did and it’s horrifying.
And retro gaming/computing is a growing hobby. There's so much new hardware and software out there for old platforms now, letting you add never-before-possible upgrades (e.g. PiStorm for the Amiga), get decent output to a modern TV, and sometimes give them shiny new cases and keyboards. Which is great if you already had a collection of retro machines, but not so much if you're trying to buy them now, with increased demand and ever diminishing supply.
(FWIW, I acquired mine two years ago, and it looks like recent sales on ebay are in the same ballpark...)