With less than 72 hours left for its release, the final book in the series Harry Potter and the Deathly Hallows has already received a pre-order for about two million copies across the globe, which is well above the previous record of 1.5 million for the sixth instalment, Harry Potter and the Half-Blood Prince.
A look at the Harry Potter effect shows that the stories of the boy wizard have always made it to the top 10 best-selling
books in the world.
Since 1998, the Harry Potter series has been in the six of the top ten best-selling books in UK. In the US, the Potter titles published after 2001 occupied three of the top 10 best-selling books, according to ACNielsen.
In the UK alone, more than 22.5 million copies of J K Rowling's Harry Potter books have walked off the shelves since 1998, while in the US more than 27.7 million copies have been sold.
Interestingly, the peak sales of Harry Potter titles consistently coincide with launch of the new hardback editions and continue to break all records.
