Report the guy. And get your $15 dollars back. If you don't then you are allowing that person to swindle more people. Think of how many more people could lose hundreds of dollars because of this guy, some whom may have saved up for and dreamed about this program. And it would most definitely be your fault for action could have been taken to stop a cheat. Furthermore it would be morally reprehensible to not stop a criminal if you can. I might add don't just alert apple alert the FBI as well.