... Pottermore sold over £1 million worth of e-books, about $1.59 million at £0.63 pounds to the dollar. The Harry Potter e-books are priced at $7.99 each (for the first three) or $9.99 each (for the final four books in the series). Assuming an average price of $9.13, that means around 164,000 copies were sold in the first three days.Read the rest here: Pottermore sold over $1.5m worth of Harry Potter e-books in 3 days
