Which to me is illegal. They are buying with the intent to flip and resell. When you answer the first question on the 4473... Are you the actual buyer... technically that's a yes... but if your intent is to clearly "resell"... ATF might have something to say about that.
Anyway, let's not get off track... This is a good link to check daily, for some pretty kickass deals...
Should it be illegal though? And if not, why even mention it?
I regret selling each of the guns I've sold, but I can't fault someone if they decide they need to sell one the same day they bought it. Sort of a "none of my business" philosophy.