Recently the American branch of Premium Bandai has officially opened and now international customers can purchase items directly via the new US website.  Currently not many items are available for order, however items such as Gundam related items and S.H.Monsterarts are available to purchase on the website. Hopefully with the opening of the US branch more fan demanded products will be available in the near future, although for now this is a good sign that Bandai Tamashii is more open to international based customers.
Source: Premium Bandai AmericaÂ