Amazon has run many sales where it gave away thousands of Marvel digital comics over the course of the past year and the company has just launched a new DC campaign. You can download 60 or so titles are free and hundreds of standalone and graphic novels range from 99 cents to $5.99. You do not need to be a Prime Member to take advantage of this promotion and you can read them on the Amazon Kindle App for Android or iOS or read them on the Kindle.
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.