Selling moonshots

Hi, I'm new to the game and I'm sure this is a well known fact, but I havent found the answer yet;

Is it legal to sell moonshots (not trade)? And if it is, what rate is acceptable?

Thanks!

Quote from version4

how would you 'sell' them?

I get 4000 probes from expo, I tell my alliance: I got a moonshot for sale - I hit you, you keep the debris and give me 3mn crystal.

For example.