I'd suggest putting it down as a learning experience and moving on. People will rip you off from time to time. Unless you have a good chance at a quick, profitable, resolution I'd suggest getting on with your life.

I've been ripped off for amounts in the tens of thousands of dollars on 3 occasions. I was pretty angry each time, but the only time I pursued it (and got my money) was the case where the counter-party was a large firm with plenty of sensible lawyers. Trying to get money back from individuals or small organisations where people have hurt feelings is an enormous hassle.