They are a specialized kind of thing. This results in them being expensive to buy but hard to resell. I see people trying to sell used ones for $150 or more, which seems reasonable when you consider they are like 300 bucks new. But like fingers, I got my Lyman 4500 for $35 at an auction. Hardly anybody else in the room even cared what it was.
Now that almost all auctions are online, it would probably go for much more.