Hi to everyone i have a question about engines. We are buying engines from US. Same issue with TF-X project too. I am reading articles and defence forums most of them saying an engine will cost 40 billion. Here is the question why a jet engine costs 40 Billion i really need a logical explanation. US companies may say 40 eventually they are private companies if they raise the prize they will get more from their goverment. But we are talking about 40 Billion dolars.