If it's for PS2 or XBOX then you're ripping him off in a major way. If it's for Dreamcast, then you're the one getting ripped off.
Uh, the Dreamcast version is the only arcade-perfect one. The PS2 version is ridiculously broken. It's generally around the same price ($60-$70) as the Xbox version as well.
In short: either way you look at it, $15 is a steal for this game.
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