“The Pentagon’s F-35 Lighting II is now twice as expensive as program officials originally envisioned, but a long-time critic of the program still praised the joint strike fighter’s recent successes.
Over the past 12 years, the F-35 program’s estimated cost has grown from an estimated $231 billion in 2001 to $390 billion. The estimated cost of a single aircraft today runs about $137 million, that’s just about double the $69 million cost estimate program officials offered in the beginning….”
Forrás : http://defensetech.org/2013/04/18/gao-f-35-program-has-stabilized/