This is something that I have thought about and wondered how The FAA would look at it. I have been told by a very experienced drone photographer, who also does all types of photography, that a 107 pilot can fly as a hobbyist as long as they don’t mix it during a flight. Now this is his definition and not confirmed by The FAA. OK I got to thinking, if a 107 pilot is flying as a hobbyist and get some really good video and/or photographs and decides to show them to an interested party who buys them wouldn’t that be mixing your flight? Would you turn down money if it was a very good offer? And what about work you did before you were certified? Is it legal to sell?