From your great knowledge of the technology and the R&D + production process involved ? Picking random numbers out of the air really doesn't work
I say it's going to cost 2.4 elephants and a pack of penguins!
The transparant screen looks pretty cool, but after seeing the 11inch SONY OLED screen a in Spetember I must say that I cannot wait to see the tech implemented in larger screens. Although it was only an 11 inch, the picture was truly phenomenal, especially the infinate black levels (making a Kuro look grey) and the stunning 3D like effect created.