Those were not F-15EX's those were much much older F-15E's they are being phased out in the next 10 years. They stopped building these things 8 years ago and combined they cost the US approx $93 million so sure its expensive still but its a third of what you are thinking because these were not EX's and were going to be retired in the next 10 years.

F-15E's the US Air Force received their last ones in 1999.

Cje95

Great that no one died, but your defense of "not the most expensive jets" is meaningless. Still $270 million in tax payer value downed ($90m a piece). I don't think there is a single thing you wouldn't rush to defend.