has some info on it here
and here is some more in depth info on it here these guys even say they reference some of Nikola Tesla theories for their work.
naw i havent much for pricing or even a place to buy em yet. i did find what appeared to be a german website that hade them for sale for $1500 but they werent ment for horticulture and the site looked ded it hadnt been updated scince 2005 otherwise im still lookin let me know if u find anything. Also did u see the light pipe tech made by 3m. it sweet u can light a whole greehouse with 2 lights.
are you refering to to pipe on the same web page you posted? if so yes it looked awsome. Im going to check the tucson az. distributor. will hit ya back as soon as I find out something
These are 1500-2500usd in purchase and have parts that wear out frequently and costs about 750usd every 18months or so. Also other parts last only 3-4years so this is not really for us yet I assume!
It seem to have very natural spectrum, but is not very lumen efficient vs 600HPS actually.