I'll try Quimby's today...
The guy I ran Ugly Pop with was a Japcore fanatic, so he just had a standing order at a local import magazine shop. Guess Doll must have some sort of North American distribution arrangement, because Jonas just got a call once a month to come in a pick up the latest issue.
Oh, and if you're ordering from Japan, the best shop to deal with is probably Boy Records Tokyo. Boy and Doll are run by the same people (along with Dogma label, which released classic early records by GISM, Rose Rose and the Comes).