I don't know if this will help anyone in the states but it worth looking into. I thought that this would fit under litigation but then i thought that it probably fits more into a scam. pay money then not received goods. this is Particularly centred for the USA residents that have purchased from this business.

http://www.ohioattorneygeneral.gov/A.../Report-A-Scam

As for international customers, it can be hard fighting people in regards to a lawsuits. you can go and see a lawyer that can act on your behalf in regards to getting a message across to the person in question.