even the one with the penguin card i got for like 50$
(is an addon card slot computer with an amd processor to do x86 guest os)
not very many of them now days but seen one couple months ago like 100$ for a dual socket ultra sparc IIIi sunfire thing
edit:
would say ebay or whatever but get raped on shipping cause sun shit is overkill af, like dual socket workstation with a massive like 2 hdds, prob weigh like ~60lbs start talking a bigger 4u dual socket thing can get crazy like 80-120lbs literally had one show up on a skid lel like 100$ to ship
but dis shit old as hell now so if cant find shortly, may never find other than dumpster/random thrifto/computer refurbisher or something, could always call and ask them if they ever get stuff like that/make them offer to pick it up if they do take one
ye with them ultra IIi IIIi talkin 15-20+years old now at this point lol
and after that was much less popular/probably much less production numbers other than very specific clients that may not dump them through usual channels