To say that fans are excited for the final Harry Potter movie would be a massive understatement. All of the previous films have been pure box office gold, all of the films making at least $750 million at the global box office. The franchise is the definition of phenomenon and millions of people would probably risk the dangers of time travel just to stop waiting for opening day. But just how much are Potter fans anticipating the ultimate installment? Well, the pre-sale numbers don't lie.