At some point this year Audible also stopped letting you see the price of audiobooks in the Audible app, you also can't purchase books without using an Audible credit via the App.

It's clearly so that people like me who save credits and only use them on $22+ books have no idea what a book actually costs without looking them up. I buy anything under $12-15 with cash since credits are basically $12, at least in the 3 credit bundle.

Jokes on them though, now I buy even less books and stick to my unread library more nowadays.