Ebook buyers ripped-off by publisher’s prices

Looking at the prices of the kindle editions of the below books,

Distributed Algorithms ($100) - http://amzn.to/glJVKv Algorithm Design Manual ($61.72) - http://amzn.to/f9G0KD

They are about $10 less than the physical book. Doesn't it cost them far less to produce, store, transport a digital version? I wonder how much of this goes to the author.