Yeah, you can find a bare-bones Amiga 2000 for not much money. But it's pointless- a bare-bones Amiga 2000 is essentially the same thing as an Amiga 500.
Unless you can get one that has accelerator cards and video cards and hard drives and all that stuff, it's not worth bothering with. Unfortunately, "loaded" Amiga 2000s are EXPENSIVE. All of those expansion cards are hard to come by, and sell for a ridiculous amount of money. Why? I have no idea. I assume it's because of the lunatic Amiga fans that still exist. The poor bastards.
Honestly, UAE (Ultimate Amiga Emulator) is so good, that there simply isn't a reason to own actual Amiga hardware. The emulator is faster, and more flexible, and more stable. And at this point, the only real reason to even mess around with an Amiga is to play the games.
As a general-purpose computer, it sucks. It sucks less than you might think for a nearly 30-year-old system, but it still sucks. Even the latest version of AmigaOS (which is only a couple of years old, I think) is a joke. There are some neat things that the AmigaOS can do, for sure, but most of it is irrelevant nowadays.