Isn't this against the EULA for Minecraft? I thought selling in-game items for real world money was prohibited.
I will try to get legal help for intepreting the EULA and hopefully if we break it we can modify the server so it meets requirements. (Charging for access? Sell only cosmetic items?)
You may be thinking about the original terms for mods, which was a more general "don't monetize it".
You're right, I was mistaken.