I Have no Clue what type of price this is.. sinse there are many different way to calculate these figures..
The Su-30SM(off the shelf Product, AKA MKI etc) which is delivered to VVS under state contract is ranged at $ 58mil.
The top gun Su-35S is ranged at Close to $ 70 mill a pop!
So Natural the Pak-Fa will land on the $ 100mill mark. The price will perhaps change upon wether its for export or domestic..
Anyway, there has not been any price figure on Pak-Fa, so its only my 2cent.
Pls disregard any figures or claim made from the Russian media Production here, cause they plain wrong on both F-22 and Pak-Fa. http://www.1tv.ru/news/techno/235356