Amazon: Bestsellers in Teen Books

When the movie "Abraham Lincoln : Vampire Hunter" hits theaters June 22, I will not be in line. But with the Kindle book currently #12 on Amazon's list of bestselling teen books, I became curious about the story. So I read this summary from IMDb: "Abraham Lincoln, the 16th President of the United States, discovers vampires are planning to take over the United States. He makes it his mission to eliminate them." Okay, sorry, still not planning to see the movie, although I'm interested in the book and author Seth Grahame-Smith, who also wrote How to survive a horror movie: All the skills to dodge the kills.