I have a few of these discs. I purchased them from Technote USA, for the Kn3000. At that time there were in Orem, UTAH, USA. One day they told me they were no longer shipping inventory. They were waiting for the Kn6000 discs and would advise me as they received them. I am still waiting but they are not. They folded up shortly after that and a couple years or so later technote developed a distributor in the Los Angeles, Calif area. They have now been replaced by a Technote USA distributor in Florida.
I have several of these discs. they are under copyright however they can be sold or given away if you do not RETAIN a copy or any rights to them, and the new owner agrees to be bound by the license.
Thats my report.