I say report him!! Either that or give him terrible publicity and put his details all over the internet.
But just for next time, don't give over the goods until you have what you want. And even then, you have no guarantee of what they will do with the snakes, you might end up being disappointed at the fact that they will end with a different purpose. I'm so sorry this happened.
oops didn't read this far. GLAD YOU GOT YOUR MONEY!