The Goose Girl (Books of Bayern) by Shannon Hale is marked down to $1.99 TODAY ONLY on Amazon and Barnes and Noble. Highly recommended, of course.
And her The Book of a Thousand Days is still 99 cents--probably until her new Princess Academy book is released in a few weeks: Princess Academy: Palace of Stone. Thousand Days is my personal favorite by Hale.
Anidori-Kiladra Talianna Isilee, Crown Princess of Kildenree, spends the
first years of her life under her aunt’s guidance learning to
communicate with animals. As she grows up Ani develops the skills of
animal speech, but is never comfortable speaking with people, so when
her silver-tongued lady-in-waiting leads a mutiny during Ani’s journey
to be married in a foreign land, Ani is helpless and cannot persuade
anyone to assist her. Becoming a goose girl for the king, Ani
eventually uses her own special, nearly magical powers to find her way
to her true destiny. Shannon Hale has woven an incredible, original and
magical tale of a girl who must find her own unusual talents before she
can become queen of the people she has made her own.
Look out for the other books in this series: Enna Burning, River Secrets, and Forest Born!