Sun and Moon, Ice and Snow by Jessica Day George is on sale for $1.99 in ebook format.
The book retells East of the Sun and West of the Moon, a Beauty and the Beast tale. And one of my favorites. And the tale helps one to understand how Cupid and Psyche is a Beauty and the Beast tale, this is the bridge story between the two.
Blessed-or cursed-with an ability to understand animals, the Lass (as she's known to her family) has always been an oddball. And when an isbjorn (polar bear) seeks her out, and promises that her family will become rich if only the Lass will accompany him to his castle, she doesn't hesitate. But the bear is not what he seems, nor is his castle, which is made of ice and inhabited by a silent staff of servants. Only a grueling journey on the backs of the four winds will reveal the truth: the bear is really a prince who's been enchanted by a troll queen, and the Lass must come up with a way to free him before he's forced to marry a troll princess.