Ah, I was always under the assumption they were based in the US. Still, it is a hassle free way to buy a doll without having to deal with a deputy service.
Kanojo Toys is based in the US and they stock a few Japanese dolls. They are a bit pricey but that's the price you pay to skip overseas shipping/customs.
http://www.kanojotoys.com/silicone-sex-dolls-c-54.html