Hello Simon,
I'm sorry but after hours of searching, we cannot find any suppliers that are suitable. It is highly likely that this brand is sold through authorized distributors only. Dragon Alliance is based in Australia but they have international distrubutors all over the globe. You may contact their USA headquarers at
Link hidden: Login to view or ring them up at 760.931.4900.
Dragon USA
5803 Newton Drive, Suite C
Carlsbad, CA 92008
All the best!