Archive:
http://archive.is/r9HyHArchive:
http://archive.is/8MldvHow naïve you are. You sent $1500 to someone who has little reputation in the forum. You should have used an escrow at the first place.
Anyway, paypal is a reversible payment method. Try contacting Paypal customer support. I hope they will take care of it and you will get your money back.
I am going to tag the user so that he can not scam anymore user. Sorry for your lose.