Not over the internet bro. It would have to be a face-to-face buy. There have indeed been setups like the one you mentioned by Police, but it usually consists of Police going to a street in the city, where there are alot of "open-air" transactions, and doing a reverse buy/bust. In any case, they have to prove that you asctually posessed the controlled substance in question, in order to charge a person with "posession". So if a person would buy drugs on the street, in a scenario like the one I mentioned above, they would surely have to bust that person immediately, while he/she has the drugs on their person. I'm almost positive that is the case. Maybe Collins can clarify however, if I am wrong.