Total Copies Sold: 3,100,890 The best-selling Harry Potter movie on Blu-Ray is also, when adjusted for inflation, the second-least successful entry at the box office. Could the people who kept away from the cinema, possibly put off by that Part 1 subtitle, waited to catch the movie at home? Probably not; theses numbers are so big there just has to be some good old blockbusting here. It'd be interesting to see what the individual sales for each movie on all formats (the first couple of films were available on VHS) were like. With poor record keeping we'll never know, but as it stands The Deathly Hallows: Part 1 wins the Blu-Ray fight.