Industry consultants estimated that American had agreed to pay about $90 million per aircraft.
This equates to an average of $14 million per aircraft with support and training included.
This number was later reduced to one missile per aircraft.
The total program cost including development, engineering and testing, averaged $2.1 billion per aircraft in 1997.
i still think the investment is too much per aircraft.
The price per aircraft was expected to be about $80 million.
By 1960 used prices were around £175,000 per aircraft.
Cost of the conversions was around £175,000 per aircraft and took 60 days.
Six are offered for sale at a price of $83,000 per aircraft, while one was sent to a museum.
Changing the wings only required three hours' work per aircraft.