It's hard because I know I could afford almost anything gaming related if I really wanted it bad enough. I mean even the outrageously rare stuff I could find a way to make it work if I felt I absolutely needed it. I just have an aversion to paying high prices for unessesary things.
So my holy grail thing I guess is something I could go buy if I really wanted to. But I refuse to pay asking prices.
It would probrably be Radiant Silvergun on the Saturn. It's something I always wanted to aquire for a reasonable price. Just I've never seen it reasonably priced.
Alternately , an arcade machine. Or let's say three or 4. Likewise I don't think owning an arcade machine is out of the question or extraordinarily expensive. It just seems impracticable to find a place in my house and pay shipping and track the ones down I want down. But if someone were to say I got this Shinobi Machine, Golden Axe 2, moving Outrun cabinet, and Point Blanc and I'll pay to ship them to you, I wouldn't say no.