User blog comment:B214/Question & Answers 5/@comment-27989561-20150410214140/@comment-24502975-20150410215750

About amazon: U.S. Amazon only has the manga that YenPress licensed. You'd have to go to amazon.co.jp and pay a ~$40 shipping fee to get the light novels, DX, and Dragon Magazine.

Registered airmail is about $8 or so. That's what I use. You could also use the regular airmail which is only around $6.