Yeah, right now it was only import sites I believe, but hopefully they'll sell it domestically here in the US as well:Here's a list of sites to preorder from:
GoodSmile Shop
Otaku Mode ($38.99, comes with free display case)
AmiAmi (3460 JPY)
Nippon-Yasan (3540 JPY)
Big in Japan (3460 JPY)
Play-Asia ($39.99)