Wow, if I were to not get a money transmitter license and just receive the money via paypal buy the bitcoin send it to him keep the $250 and if the money is not linked to some form of criminality from an investigation what would happen?
You'd be breaking the law if you live in a place where that law applies. The act of handling money without following the rules is a crime in itself. Obviously you have more problems if that money is crime related too but even if it's completely clean you're still flouting rules they take seriously.
If it was a few bucks here and there no one's going to care but you're talking about pretty large volumes and at some point that might alert someone. No one's getting executed or anything but it's going to be problematic.
There's real money involved which means real law applies just as much as anywhere else. It's no longer an internet obscurity. People need to figure that out before they embark on things that could end up getting very messy.
If this was 2011 then it would be a different matter. It isn't. Enough places have clarified the legal position now. If you're in a place where it is clarified then it's clear enough what needs to be done.