The U.S. print run of book one, Harry Potter and the Philosopher’s Stone, was 50,000 copies. The U.S. print run of the final installment, Harry Potter and the Deathly Hallows, was 12 million copies. Harry Potter and the Deathly Hallows sold 8.3 million copies in the U.S. in the first 24 hours. That’s 96 copies per second. If you lined up those 8.3 million copies, you’d end up with a bookshelf longer than the Grand Canyon. Harry Potter movies have made roughly $5.4 billion worldwide, more than any other franchise. That averages out to $900 million per film. It’s as if every person in the world has spent 80 cents on the franchise.