Ai, they finally have run out of them, it was in stock for years. Mountain electronics sells them too, and I see only 2 listed, so that is almost finished too: Color and Dynamic White XM-L Driver - 17mm
I started a thread about this driver two years ago, but that is not very relevant anymore if the driver is not for sale anymore 
, pity, it was an interesting driver, nothing like it around. djozz driver hack #2. (was: Colour driver build, based on D882 sot89 transistor?)