"Harry Potter" books differ in value based on edition and volume. In 2014, first-edition copies of "Harry Potter and the Philosopher's Stone" had a market value of $2,333. The condition of the book can cause the price to rise, reaching prices over $15,558.
"Harry Potter" books that fall later in the series have less value. "Harry Potter and the Goblet of Fire" often sells for less than its original sales price, with the exception of deluxe editions. "Harry Potter and the Deathly Hallows" is worth the least, even as a first edition, because it was mass produced and readily available.