It's not quite what you're asking for, but Audible records a lot of Audible Originals which are all freely accessible to members without having to use any credi

It's not quite what you're asking for, but Audible records a lot of Audible Originals which are all freely accessible to members without having to use any credits. Unfortunately most Audible Originals aren't very good. I think Audible also offers an unlimited subscription for romance novels, although it's been a few years since I checked.