[michaelbuckbee]

To your question of "Does Amazon now need to pay 100 different authors?" the answer is "yes".

My understanding is that they tally that up and pay each of the authors at the end of the month with a single payment of the KU revenue, directly paid for books, etc. As each book can be bought multiple ways. Though note this only applies for self-published books as otherwise, it all goes back to the publisher.

[portmanteaufu]

You've changed the question. Amazon already pays 100 different authors in this scenario--they each get paid for the single page that was read from each of their books. Paying for 100 books would be much more expensive than paying for 100 pages like they do now.