There isn't much you could do at this point unfortunately. If he don't deliver what he promised , you should explain the situation to PayPal and you should win the dispute without issues . Next time , use Bitcoin with escrow , that way you can't get scammed.
and please , EDIT your OP using the Scam report format :
https://bitcointalk.org/index.php?topic=260073.0 to make it easier to read.