I have an account with audible too. I blew my credits on Sarah Palin’s Going Rogue and one of Agatha Christies. Have to build back up my credits.
Let me ask you a weird question- are the books you listen to different from the books you physically read? Mine are for some reason. I listen to a lot more fiction (scifi, horror, suspense). When I physically read, it tends to be non-fiction (true crime, politics, religion, how-to).