This would really only be to satisfy my own curiosity. The logistics involved in having us offer fully assembled and finished bamboo enclosure Rythmik subwoofers is very complicated. Even if this company could offer these cabinets at this price, and assuming they are built well and use high quality bamboo, they would then have to be shipped to our cabinet maker for finishing. From there, then shipped to us for assembly, testing and packaging. Rythmik would, of course, also have to ship us the woofers and amps...
It is a logistics nightmare and will not be cost effective by any means. Best if you DIY them.
Definitely a niche product... perhaps a business opportunity for a skilled hobbyist?