Mark, even if the materials cost 4x more than the ones to make a Zhi or Echo frame for instance... well, you know.
Koxx spends a lot on publicity, events and R&D. As far as I know (could be wrong) they don't have their own factory. All of it including frames is outsourced which is why you can buy Try-All parts with Rockman written on them. Therefore their supply chain is a lot longer than with other manufacturers, Echo's probably being the shortest of them all for frames, forks and a few other parts. Basically the shorter the chain, the lower the costs. All this accounts for vast expenses which need to be paid for in one way or another. Plus, much of their activity is located in Europe which isn't the cheapest place either.