At the start of the year I moved over to take advantage of their bounty program. $3-$5 per free trial signup. Movies for example included Amazon Video, HBO, and stars. So if someone tried out all 3 I got $9.
I sell books on amazon as well. My website for one series has an audible affiliate link. An audible signup = $5. If they first check out my audio book I get a percentage of the book cost and if they stay subbed for 61 days I get a $50 bonus. If they sign up for Kindle Unlimited to read it I get $3 + page reads from the book.
The straight affiliate product sites are going to take a hit. One was for an electronics niche.
Luckily this change shouldn't impact me too significantly since my primary niche will be in the 7% bracket and I was making 7-8% previously.