Wow, developing an airplane, when there were already other airplanes cost twice as much as creating a bomb that hadn’t existed before.

What comes to mind is that it’s pretty important to keep an airplane in the air, which must require a lot of careful engineering. Also that you have to make a lot of them. A bomb doesn’t really have either engineering requirements. (Only has to work once, they only made a few)

I also wonder to what degree cost was saved by getting all those highly talented and motivated refugees from europe