Or just spend the cash on an Indivision, which works better than any of the other flickerfixers anyways. Other than the various RTG boards, of course, which offer far more than a simple flickerfixer/scandoubler.
Why would you want to put an A2320 into an external case with blingy blue LED's when it's an internal card, lol. A2320's were not without their problems either, and were fairly rare.
That ebay 2320 is going for about 250 E more than I'd ever pay for it, NiB or not.