Well, there's always
www.play-asia.com, which is currently having a pretty decent sale. (For instance, you can get IIDX Red for... $53.00, including shipping?) If you use
VJArmy, do them a favor and buy your game through their links there; they receive a referral fee, which in turn helps to keep VJArmy running.
I've also heard people use
www.yesasia.com and
Toys and Joys. I have tried none of these places, but I've noticed that Play-Asia has the best prices overall while Toys and Joys'
dedicated beatmania section says it has some of the older beatmania games that are really hard to find. (They have prices listed all the way back to beatmania - NOT IIDX - 2nd mix. That's dedication.
)
Traditional importers would make direct contact with a friend in Japan and/or use a physical import shop; however, I am a lazy soon-to-be internet importer, and know nothing of such places.
And of course, the final option is taking a holiday to Japan.
This seems like a good topic for a general thread, and if you don't get more responses here I might start one.
Edit: note that Toys'n Joys also has a
dedicated Konami music section, organized for the convenience of Bemani nuts everywhere. And despite the fact that it refers to
Konami music in the title, it also includes the music games that aren't technically Bemani but really should count anyway (like Taiko no Tatsujin). I like these people.