Other places to keep an eye on are HumbleBundle (
https://www.humblebundle.com/books/), StoryBundle (
https://storybundle.com/) and Bundle of Holding (
https://www.bundleofholding.com/). BoH is mostly RPGs, but they have occasional fiction bundles. SB is mostly indie authors, but they sometimes have award bundles or Open Road bundles. HB seems mostly geek-related non-fiction, but do comics, RPGs and some fiction.