RS - Unbalanced Trade Removal : Runescape News

From this moment on, no unbalanced trades may be made. We would recommend that you 'read more' to find out how this affects you. Also, following your feedback, we have raised the proposed 3,000gp margin for duelling and trading, depending on the number of Quest Points you have!
Read more...

http://news.runescape.com/newsitem.ws?id=1036