At least in this area with Spikeout, I preordered it because I heard it was going to be a beat-em-up, and it would be produced in very limited quantities. While I didn't believe the limited quantities stuff, I love beat-em-ups. So...

The EBGames that I bought it from got one copy -- mine. The manager really wanted the game after seeing it from me, and it took him over a month to find a copy of it. That's the last time I've seen it 'in the wild', but judging by eBay prices, it definitely isn't that rare elsewhere.