The Snow Queen (Tale of the Five Hundred Kingdoms) by Mercedes Lackey is currently reduced to $3.70 on Amazon in ebook format. Other books in the series are still at least $5.50 or more. I know there are some fans of this series out there, so here's a chance to get one of the titles for cheap in ebook format if you are interested.
Aleksia, Queen of the Northern Lights, is mysterious, beautiful and widely known to have a heart of ice. But when she's falsely accused of unleashing evil on nearby villages, she realizes there's an impostor out there far more heartless than she could ever be.
And when a young warrior disappears, Aleksia's powers are needed as never before.
Now, on a journey through a realm of perpetual winter, it will take all her skills, a mother's faith and a little magic to face down an enemy more formidable than any she has ever known....