In this story, a Harry Potter book fetched for a whopping $471,000 (P23.7 million). What makes these early editions so valuable? According to the law of supply and demand, the harder it is to find ...

Since the series started in 1997, 500 million copies of Harry Potter books have been sold worldwide. The last book in the series, Harry Potter and the Deathly Hallows, broke records to become the ...