I have one of those boards too.
I got it on Ebay fro just 41.50 EUR incl. P&P.
I guess people didn`t trust this offer so it went so cheap. When it comes to paying I found out that the seller was actually Thomas Dellert, from him I learned that the "special software required but not included" was just a special Version of WarpOS that is on every OS3.5/3.9 CD.
When installing PPC-support you are questioned what board you have and there are 3 possible answers: CyberstormPPC, BlizzardPPC and
Developerboard.
You can see that it is running by looking at my page: (sorry german only, but there are some pics)
http://home.joice.net/j100513/pages/powerup.htmlI`m not sure if this module will work in the MKIII it is offered with, as Thomas Dellert told me back then that it will only work in a MKII.
The seller is selling a MKII too, so maybe things just got mixed up.
Those modules were never released to the public they were only send out to some keydevelopers so the could prepare PPC-Software while the right PPC-Boards were still in the makeing.
Don`t expect a powerboost, as the Processor ist only a 603 @ 150 MHz makeing it the slowest PPC available for Amiga and the RAM-Interface will only be 32bit not 64bit like on the later CSPPC.
It still is good enough for playing/encoding MP3, viewing Pictures an playing Quake I in a modest resolution.