Well I've seen the game on "clearance" at some places here in Japan for under $30 new(msrp is ~$70). Even Amazon JP has it in their "bargain corner" section for that price as well. (57% off)
I'm guessing after the initial waves, it hasn't been selling too well. Maybe they need to tweak some stuff before there is a Western release.

starcraft: "I and every PS3 fanboy alive are waiting for Versus more than FFXIII.
Me since the games were revealed, the fanboys since E3." 


Skeeuk: "playstation 3 is the ultimate in gaming acceleration" 









