I know this topic is old as hell,but i´m having the same problem.Maybe you could tell me how you got the key back? Edit: Found out how to get it back. You have to start the elemental workshop II to get the book along with the key.
It's still fairly easy to sell runescape money through Bounty Hunter if you guys didnt know that already.Now the chinese people found it out aswell :P I myself don't realy care cos im quitted lol