I talk about my experience trying to get answers from FriesenPress about why their book prices are so substantially (30–50%) marked up on Amazon sites, and whether Friesen authors/clients know about this markup before they sign on with Friesen.

FriesenPress
https://www.friesenpress.com/

FriesenPress Bookstore
https://books.friesenpress.com/

Writing & Editing
Episode 143
https://writingediting.ca/episode/143-publishing-and-all-the-self-publishings/