Because this info isn't easy to find (and because I like japanese indie games...):
If you want to import "dojin" (japanese indie) games that are sold in stores you can get them through
Himeya or
Palet. I know I was glad when I saw a link to Palet in a Slashdot discussion, Himeya insists on using EMS for shipping which is expensive as mad (20$ for one game) which is quite bad for games that cost less than 20$ a piece. No idea how reliable those are but the big importers don't stock dojin games (possibly because they are PC games and... um... Just look into Palet's PC game section). I think Himeya has a wider selection but Palet takes requests so you can get pretty much anything from them (got them to stock that Bunny Must Die game I listed int he "list your games" thread).
So if you want your copy of
Gyousatsu Spirits you know where to look now.