Selling of account is not prohibited but discouraged and am sure you should know that with the log of time you've spent on the forum. In selling of account, there is a lot at stake and should be considered.

Your account is you and it tells of how well your reputation have been on the forum and people would always value your account as such.
Buying and selling is always an ask and bid so, you really get to quantify what it means to you and value it knowing that, you ain't just selling some user but, your selling a part of yourself, your reputation to be used as fit by someone else.

I would say, you shouldn't do that. Reputations aren't something that should be built, bought and sold.