In addition, you can also find Momoko dolls, which are hard to find in the US (and can I just say how badly I would like to add Alice in Snow to my collection? And while you're there, check out how cute Lacy Modernist is! She's a pre-order), Licca, some Volks dolls, and limited edition Barbies (some of which are hard to find here). In addition, R&D is an Integrity Toys dealer, and often have interesting and hard-to-find Fashion Royalty, Dynamite Girl Susie (she's an exclusive for them), and occasionally FR Nippon as well.
I know a few collectors who have shopped from this site, and they not only have a reputation for great customer service, but the owners are fellow collectors and very friendly and knowledgeable as well. Plus, one of the owners, Rudi, who also runs a blog (check it out and follow it!) is actually one of the guest judges on Couture Challenge, also.
Photos courtesy Sekiguchi.