Just like if you have a book, you instantly have some leverage over those who, well, don't have one.
Wait, they have episodes how often? Every Single Day. They do what exactly? Narrate other people's work. Wait. What? Listen in. The audio is...
This is where things can get exciting with your book as a podcast as opposed to (or in addition to) an audiobook.
Don't know where to price your audiobooks? Here you go.