Do not compromise gameplay and playing environment to prevent something that is optional to players. Encourage gameplay, not discourage. Proper promotion and education will deter Goldsellers.
And if you cannot stop them, join them. Similar to Guild Wars 2. Create your own legal way of getting in game cash. I wouldn’t agree for real life currencies to be converted to in-game credits, but it is a way to curb illegal gold selling especially if you are so red-eye upon those gold sellers, maybe you should do it.
What i am saying is that whatever measures IMC have implemented to curb illegal gold selling is stupid and are immature tactics. Look long term. Focus on the players.
Not the best english, but you get my point. Happy players, healthy income.