I could almost guarantee the reason they're not selling out of the states is because their ebook store has nothing you can buy, legally, outside of the United States. And without said store I sincerely doubt they'd give a stuff about these devices. I find this a little short sighted... but. [shrug]
I've also seen this forwarder recommended a fair bit:
https://www.borderlinx.com/m/ never used it myself, though.