I shure the production cost of this sensor don't exceed price of the 1D X's sensor. It have only larger microlenses above pixels and no more. It provides 3 stops sensitivity over. If you want to see how this sensor shots on 102400 ISO, you must shot by Nikon D4 on 12800 ISO by 2.7 crop mode (about 8 times less area than Full Frame).
But the Canon is very greedy and try to extract the greatest profit. Therefore the price will be overrate to >1000%:( So, I want to see in market at least a Sony NEX-FS100, upgraged to Full Frame (2.25 better sensitivity) by price about $8k.