40GBP for a pro license .. but add-on cards for 2000GBP or 4000GBP. http://www.lwks.com/index.php?option=com_virtuemart&Item...
For generic CUDA or something sneaky and incompatible? The software looks good. I might buy it if the card thing isn't what it looks like: a sneaky post-facto wallet-grab.
(Devs: Please - a clear, no-BS explanation on the value proposition and limitations for those of us who don't want to ship a piece of silicon across the world to use the software! Also, approach taken to distro support ... I'm on gentoo. Ta. Best of luck!)