The problem for Mods is determining what is illegal, against someone's TOS, or legitimate. It would become their only job all day long. What I do is take note that an old, trusted account means nothing at all. Never trade based on trust. Satoshi's whole idea was a trust-less system.

I do think it's unethical even when it's legal. I will not sell my account, I may some day delete it, but not sell. I can only imagine why some one would pay me a few hundred bucks for it.