Dangerous Angels with Bonus Materials by Francesca Lia Block is temporarily free.
For a limited time, the collection of Francesca Lia Block’s Weetzie Bat books, Dangerous Angels, is available with a special sneak peek of Pink Smog, a new prequel to Weetzie Bat, and excerpts to the lush paranormal romances Pretty Dead and The Frenzy.
Evernight with Bonus Materials by Claudia Gray is free in this edition which doesn't have a cover image at the moment. That's the paperback image and link above.
For a limited time, Claudia Gray’s star-crossed paranormal romance Evernight is available with a special sneak peek of Balthazar, the upcoming Evernight companion novel, and excerpts of the rest of the Evernight series, including Stargazer, Hourglass, and Afterlife.
Cloaked with Bonus Materials by Alex Flinn is 99 cents. (I've featured this one previously, but there was no cover image before.)
Entwined by Heather Dixon is still 99 cents, too, but I expect its price will raise soon so if you haven't jumped on it, do so soon.