So Amazon is charging 30% for ebooks + delivery fees. But their delivery fees are crazy. See below. Great overall post.
Amazon’s markup of digital delivery to indie authors is ~129,000% | Andrew Hyde:
"So for every $9.99 book I sell I, the author, pay 30% to Amazon for the right to sell on Amazon AND $2.58 for them to deliver the DIGITAL GOOD to your device. It is free for the reader, but the author, not amazon, pays for delivery."