The reality is, Noble is still a small company doing big things. Maybe one day, Harman International will snatch us up and with their sales channels we will be more easily available. (Put in a good word for me)
As for our primary focus being "America" the internal figures I have, do not bare that out. We are registered in America & have an office in America so assumptions can be easily made that America is therefore our primary market. The fact of the matter is, the demand for portable audio products is higher in Asia. (The lifestyle is more conducive to this hobby)
I wish you luck in finding a Rex5.