I won The Serpent of Venice from a Goodreads Firstreads giveaway and I will be reading it soon so I can post a review before its release date.
The rest of the books I bought with the credit I got from trading in some textbooks through Amazon.
So I spent less than £10 on books in March, which is fantastic for my bank account ;-)
Oh! I almost forgot, I also bought Red Glove by Holly Black and This Dark Endeavor by Kenneth Oppel, both brand new and only £1 each.