Amazon is running a promotion when you buy $20 worth of Kindle books, you get a free $5.00 credit. This offer is only valid between July 5 and July 14, 2019. You need to be a Prime member and is only good for a single purchase. You cannot buy $60 worth of Kindle books and get a $15 credit. It also does not apply to Kindle pre-orders or audiobooks. Amazon ran this promotion last year and many people capitalized on the offer.
Amazon is also running a First Reads promotion for Prime members. Starting this July and running to the end of the month, you can choose two Kindle books for free. There are eight titles in total and span multiple genres.
Michael Kozlowski is the Editor in Chief of Good e-Reader. He has been writing about audiobooks and e-readers for the past ten years. His articles have been picked up by major and local news sources and websites such as the CNET, Engadget, Huffington Post and Verge.