Hi Garth and thanks for you comments!
To explain how im thinking:
1) Zen graphite is new on the market so it need to undercut price to get market shares
2) There is to my knowlegh now commercial Pebble-bed reactor up running today (correct me if im wrong) so we have to be very conservative on the price there.
and most imporant:
3) Production & Sell prices ( More or less grabbed them from my *** with the help of google)
Remember this is my estameted guess it is probably very wrong in many ways