Harry Potter Sale
In late 2015, Apple released enhanced editions of all seven Harry Potter books on the Apple Books store. These books include unique artwork, interactive animations, and annotations from J.K. Rowling throughout the series.
Usually selling for $9.99 USD/$11.99 CAD, these books have been marked down (as of 2020.05.26) to $4.99 USD/$5.99 CAD.
External Link: J.K. Rowling on Apple Books