A few months ago I became aware of a helpful website, Gospel eBooks. If you have a Kindle, or any device with the Kindle app, this site is a great resource. They keep an eye our for great deals (free/cheap) on Kindle books and post them for you to see. Over the past few months I have downloaded a good number of great books (some of which I was seriously considering buying) for either free, or a couple of dollars. The site has three main tabs: Free, Cheap, and Deals. Check it out: gospelebooks.net.