Was about to purchase a book and noticed this promotion.
Buy any Kindle book, get 15% back toward your next book
Step One: To apply this offer to your account, please sign in below.
Step Two: Purchase a Kindle book by 11:59 p.m. (PDT) on May 28, 2018.
Step Three: You will then receive an email confirming the promotional credit equal to 15% of the Kindle book's purchase price (up to a maximum of $10) has been applied to your account, before any applicable taxes. Use your credit on a Kindle book by 11:59 p.m. (PDT) on May 31, 2018.