Well I have the exchange source and it is unusable. It ranks high in the list of worst coded software I have ever seen. I don't think you should sell it because it is of no use. It has no value whatsoever.

If I don't have a refund by tomorrow morning I will publish the exchange source code and database dump that I got so everyone can judge. This guy is leaving traces everywhere. I am pretty sure we can track down this dev if we combine all the information and traces he leaves behind.