[Sam]

Selling items for real money is not illegal. It's not our business what you are doing with your money. We don't care if you give items for free or sell them for $$.
But if we tolerate deals for real money on graal servers, the players wants us to monitor the deals and restore items or pay back money to scammed players. There are a few more reasons why it's not allowed to announce it, but I think it's clarified now, why we tolerate mass messages containing the phrase "over AIM".