ORIGINAL: dirtybird
....build a working cruise missle (for measely sum of $5,000)....
Without the warheads, that is about the right cost and pretty easy to make. Check the amateur rocket clubs. They build the equivalent of cruise missles all the time.
A nuclear bomb is even easier and cheaper to make as well. It is the weapons grade plutonium that is tough and expensive to get.
R&D is what costs a lot. Manufacture is pretty simple. I wouldn't trust either to hobby grade RC though.
Lets get back to the topic: 2.4Ghz RC