This book retails for $79.95 and Amazon sells it for $57.78. But the best price online to purchase it is at the Human Events Book Service (go here), where you can get it for $34.95.
I highly recommend Weikart’s latest. Darwinists continually try to deny or change the subject that Darwin’s theory deeply influenced the Nazis. Accordingly, what the Nazis did is supposed to constitute a profanation of tried-and-true pure Darwinism. But the flow of ideas from one to the other is clear. To be sure, Darwinism is not a sufficient condition for Nazism, but it certainly was a necessary one.