All seven Harry Potter books are finally available as e-books, through the Pottermore online shop.
They're currently available only in British and American English, costing $7.99 or $3.99 for the first four books; $9.99 or £6.99 for the final three.
Audio books are also available at £29.99 or £17.99; and, in the next few weeks, French, Italian, German and Spanish versions should appear.
Highly unusually, the books are only available through the website, but are being promoted by the major retailers, who then refer customers to the Pottermore website.
The books are also still supported by retailers with device syncing and bookmarks. They're compatible with e-readers including Amazon's Kindle, Sony's Reader and Barnes & Noble's Nook, as well as tablets, phones and the Google Play digital store.
"For years our customers have loved reading Harry Potter books in print, and have made them the best-selling print book series on Amazon.com," says Russ Grandinetti, Vice President of Kindle Content.
"We’re excited that Harry Potter fans worldwide are now able to read JK Rowling’s fantastic books on their Kindles and free Kindle reading apps."
Apple, though, is refusing to play quidditch, at least so far, thanks to its agency model - although Pottermore says it's hopeful of strinking a deal with the company at some point.
However, would-be readers can still get the books through retailer apps such as the Kindle app for iOS.
The decision to sell only through Pottermore may impact sales, as it will require users to open a new account, rather than being able to use an existing Amazon or Kindle Store account, say. But Harry Potter fans are notoriously dedicated; we somehow suspect that won't be a problem.