Amazon.com said that first-day advance orders for "Harry Potter and the Deathly Hallows," the seventh and last installment of J.K.Rowling's successful book series, were 547% higher than for its predecessor.
Thursday's pre-orders for "Deathly Hallows" exceeded the first two weeks of pre-orders for its predecessor, "Harry Potter and the Half-Blood Prince," Seattle-based Amazon said.
"Half-Blood Prince," released in July 2005, generated more than 1.5 million pre-orders on Amazon, the online retailer said.
The final Harry Potter book is slated for release on July 21. Scholastic