I believe Kindle books give a 30% revshare to Amazon. It's a lot, but they do marketing, distribution, payments, the e-book reader, etc. so that authors don't h

I believe Kindle books give a 30% revshare to Amazon. It's a lot, but they do marketing, distribution, payments, the e-book reader, etc. so that authors don't have to. That's still 70% to the author (and publishers, agents and other middlemen if the author chooses to hire them). It's not a zero-sum game, where either the author wins or the middleman wins. It's complicated.