The first is a series of books by Kady Cross. The first title in the series is The Girl in the Clockwork Collar. If you enjoy Steampunk literature, you might be interested in rescuing this series from the weeding pile. Steampunk mixes older time periods with machines and technology that seem ahead of the times. This series includes mystery and adventure and friendship.
The second set of books are by Melanie Dickerson. I love fairy tales retold; and this author has written several. The one I am reading right now is a retelling of Cinderella. The Captive Maiden is quite a twist, because Gisela has caught the eye of the 'prince' in our story and from the start, he knows who she is and that her step family does not treat her well. So, when she disappears, Valten will not rest until she is found. Another book by this same author is The Fairest Beauty, a retelling of Snow White.
So, if you see a 'Last Chance for These Books' sign, you might check one out and rescue a book.