The Harry Potter books are now available for iPad, Nook, Kindle and most other e-readers through the Pottermore Shop. Prices start at $7.99 for the first three volumes, and $9.99 for books four through seven. The whole lot can be had for $57.54. Audio books are available as well.
I didn’t expect this to happen before Pottermore launched publicly. I only hope Iain Broome’s prediction is wrong.