It is impossible to determine.
There have been approximately 61 million copies sold worldwide of Harry Potter and the Prisoner of Azkaban.
By 1999, 300,000 copies of Harry Potter and the Philosopher's Stone had sold worldwide.
As of June 2008, the seven book series has sold more than 400 millioncopies.
Around 75 million copies of the books were sold.
Billions
10,000 copies
Over 120 million copies of Harry Potter and the Philosopher's Stone have sold worldwide.
There have been approximately 61 million copies sold worldwide of Harry Potter and the Prisoner of Azkaban.
120 million+ copies of Harry Potter and the Philosopher's Stone have sold worldwide so far.
By 1999, 300,000 copies of Harry Potter and the Philosopher's Stone had sold worldwide.
There have been approximately 61 million copies sold worldwide of Harry Potter and the Prisoner of Azkaban.
Worldwide over 75 millions copies.
Roughly 11 million copies.
Worldwide over 75 millions copies.
Harry Potter has sold more than 450 million copies worldwide.
As of June 2008, the seven book series has sold more than 400 millioncopies.
In the United States alone, Harry Potter and the Half-Blood Prince sold 6.9 million copies in the first 24 hours.