Retailers such as Amazon.com, Barnes & Noble, and Borders reported that more orders had been placed for this book than for any other in history, with Amazon.com stating that advance orders of the book reached 2.2 million worldwide, breaking the record set by the sixth book of 1.5 million. Scholastic announced an unprecedented initial print run of 12 million copies.
On the book's first day of sales, it sold 11 million copies in the UK and U.S., breaking the record of 9 million held by the sixth book. In the U.S., 8.3 million hardcovers were sold during the first 24 hours, breaking the record of 6.9 million set by the sixth book. In addition 400,000 copies were sold in Germany in the first 24 hours, all 250,000 copies made available in Holland and Belgium, 170,000 in India, and just over 573,000 copies in Australia; while in Canada over 800,000 copies were sold in the first two days. Barnes & Noble, the largest U.S. book chain, reported all-time record sales of 1.8 million copies in the first two days including 560,000 in the first hour - a rate of more than 150 copies per second. The audiobook broke records as well, with 225,000 copies sold in the first two days, according to Random House Audio's Listening Library. Borders reported record sales of 1.2 million copies on the first day, breaking the record of 850,000 set by the sixth book.
During the run-up to the release of Harry Potter and the Deathly Hallows, Bloomsbury's stock lost more than £151M in value. Investors were reacting to the end of the publisher's key product. In the last financial year in which no Harry Potter book was released, Bloomsbury's profits dropped by 75%.
Warning: Lots of spoilers TRUST ME you don't wanna miss this!