Not to detract from the excellent trade section on o0ple which I enjoyed being admin for and buying and selling from, I've had this page up for about a month now.
(this is not the reason I signed of from being an admin on o0ple though 
)
then try here
http://www.facebook.com/#!/groups/RC...UKSellBuySwap/
Might get some new people into the hobby once your friends see what you have to sell
Users need to be approved to post so it can be controlled somewhat. I could even make you admin.