A growing list of Backlist eBooks authors are posting information about their sale books on Doranna Durgin's
blog thread (read the post and then the comments to pick up book links). I expect that list to get longer over the next few days. The authors include romance, mystery, fantasy, SF, and probably other genres by the time everyone has posted.
While you're at it, take note of Doranna Durgin's collection of dog stories, "The Heart of Dog," which is also on sale. She's trying to raise money for medical treatment for a sick beagle friend.