Harry Potter has been one of the biggest franchises of our time, with the movies grossing a total $7.7 billion worldwide. So how much do they really pay their actors and extras? An extra reveals all. Samantha Clinch is an actor and radio presenter, hosting her own prime time BBC Radio show. With skilled interview technique, infectious energy and warmth, she has also become a bit of a social media star. Though her empathy isn’t the only reason she’s popular, Potterheads will know, the celebrity also played Eloise Midgeon in the film adaption of Harry Potter and the Prisoner of Azkaban. As a chi…