That’s right, anyone that hosts an affiliate link to any product on Amazon would get both the fee for that book and a small percent from anything else that the customer buys for the next 24 hours. In fact, if a reader simply clicks the affiliate link to your book but doesn’t buy it, the host of that link will still get affiliate fees for anything that customer buys on Amazon for the next 24 hours. So it’s great for them to host a link that people click on, even if it doesn’t have a high conversion rate. The issue is just creating compelling enough copy for someone to click it. And note that the author (or whoever) that hosts your link would be using their own affiliate links (so they must be set up for it), not yours. Hope that helps.

My book, “Revelation Antarctica” (RA), is a borderline fiction/non-fiction book (“As real as you need it to be”) designed to appeal to people who are interested in UFOs, reincarnation, synchronicity plus another 9 similar “borderline” fields.
(revelation-antarctica.com)

For example, there are many “serious” books on synchronicity – but none of them are particularly “exciting”. But someone who has read “RA” might well be more inclined to read the “serious” book on the subject after having their interest aroused…

So my idea is to offer “serious” authors the opportunity of hosting an affiliate ad. on their site explaining what RA is all about… If visitors DO buy a copy of RA, the host site owner not only gets a 4% fee on the sale – they also earn the affiliate fee for anything else the customer buys on Amazon over the next 24 hours…