I've received a photo of the adapter that has been created for connecting to a RPi. The interface is USB, so that's good news.
http://i.imgur.com/S2sr0zcl.pngI will ship overseas, but I can not estimate a price as I don't have package dimensions. The weight will be somewhere around 8kg.
There will be 1 USB adatper per Prisma unit - not 1 per blade, correct?
If I plan to run 3-4 Prisma off a single RPi all is needed is a powered USB hub?