Hey, thanks for the reply!

Can you check this example: https://www.amazon.com/Night-Circus-Erin-Morgenstern-ebook/dp/B004J4WKTW/ref=sr_1_1?dchild=1&keywords=the+night+circus&qid=1616404724&s=digital-text&sr=1-1

I'm using an example of a traditionally published book (The Night Circus) which has both kindle and hardcover versions (you can look at any other book, I think it would be the same). The link above is to the ebook, and there is no "also bought" section, but when you click on the hard cover, it quickly shows up. So maybe ebooks don't have that section?