Rooster; how did you send the money? If you're lucky enough that it was a postal money order, then you can file a complaint with the post office. The receiver will get to answer to felony charges of wire fraud. The post office enjoys federal protection, due to it's being so ingrained into our infrastructure.
If it was a different form of payment, the best I can suggest is to contact law enforcement in the seller's home town, and file a complaint over the phone. You may not get your money back, but if the next guy also does it, then he may get a visit by the gendarmes.
Roger