You may know of him, dude, but he's not THAT popular... definately not in the same league as Satch and Vai in terms of popularity. and while it sucks for the players, Ibanez is first and formost a buisness; if the PGM30 isn't selling at all, then it'd stand to reason that the 300 would be even more of a failure. Yeah, it's not guaranteed, but that's economics for you.
I can relate, i'm a VERY happy RG-2027x player, and i had a hell of a time tracking one down (they were just discontinued in japan). Be relieved you can at least import your favorite axe from japan if need be.
PS- i don't remember the site, but a quick search of the jemsite forum ought to turn it up. Otherwise, talk to rich harris or something. the dude knows everything, it seems, and has dealt with the distributer extensively- i'm sur ehe'd know the link.