Not sure if you guys have heard about this yet, but Smashwords is having a huge July sale right now with books ranging from 25% off all the way up to free. Most of my books are in the sale with half being completely free, and the other half being 25% off. There's something like 10,000 titles as part of this sale from what I understand. Details here:
https://www.smashwords.com/books/category/1/newest/1