I think you're gonna have a hard time finding a classic card like this.
I reckon that they probably didn't make that many in the first place due to its price and the noise issue, plus they're collector's items now so people hang on to them. Have you tried eBay?
I've got some collector's graphics cards, with my favourite one being an EVGA 7950 GX2. I got this beauty brand new and sealed in a fire sale a few years ago. Ran it up a couple of times where it worked perfectly. Went back in its box which has sat on a shelf ever since.