I think they pay 50 million for each Strike Eagle.
For a country to be superpower isn´t cheap. That´s why Europe threw the towel after WWII: too dam expensive.
But it´s not only a question of money and resources but of WILL and commitment. If a country wants to be On The Top then must be willing to do whatever is neccesary to achieve and maintain that position. If a country has a broken will then nothing can be achieved, like the US at Korea, Vietnam and now at Irak. We can see the measure of that resolve at the US at Iwo Jima or at the Bulge... or the Spartans at Thermopylae or Rome at Cartage.
For example: the US Army lost more or less 10,000 men in one afternoon
in 1862 at Antietam Creek. Those losses strenghtened the resolve of the Union to win whatever the cost. Nowadays CNN is weeping for 3,000 soldiers in four years. Nope, no victory at sight, only lack of resolve.