While we do frown upon it, we will not ban/punish anyone for doing it. However, know you do it at your own risk.
There has been issues (scam mostly) that arose from these type of transactions in the past few months. We have not and will not get involved. This matter is between you, the other party(s), and the financial medium(s) you used. We advise you to be very cautious if you decide to enter into these transactions.
HOWEVER, this doesn't mean you can sell any character or anything else for real money on our boards !