RSGPKING Scammed me

Link to scammer's Sythe profile: http://sythe.org/member.php?u=282960
Briefly explain the trade: I added him on MSN, and told him I would go first. He told me to act like a mate from school (I assumed that way Jagex doesn't find out we're RWT) and I did. I then traded him the 10M. On my MSN conversation with him, he said he sent the $10. But as you can see in my screenshots, no money was ever sent.
How they scammed: Never sent money.
Proof that you were not talking to an impostor: I have screenshots of his Runescape name, and screenshots of trade.
Trade screenshots:

 

Banned, thank you.