Please explain Audible to me!

[drspouse]

DS really likes to listen to a book on audio and read it (and they are great for car journeys) - we get them from Borrowbox at the local library and we've bought a couple from Google Play Books but those are so expensive and the library range is limited.
How do you get the books on Audible as the subscription options are so confusing - do you own them? Can you copy them to other devices? Are they all £7 or way way more like the Google Play ones (in which case it's probably not worth it)?
We have Google speakers and we use Android Auto in the car (you can definitely play from Borrowbox, Google Play Books and we also use an app called Hi Fi Cast to cast to the Google Speaker as playing via Bluetooth doesn't work in our older house with very thick stone walls.
Can you play Audible books on your own app or do you have to use Bluetooth?

For a complicated reason relating also to our thick walls, we tried Cast My Audio and it also doesn't work.
I think I feel better about converting a book I own to mp3 though.

They've changed audible recently so you can only hold a certain number of credits - I think it's 6 so you do have to make sure you use them up when you have a subscription.

Well, I didnt mean it like that.

I listen to my books at night once I've gone to bed. Sometimes I fall asleep and i'll wake up to it 8 hours later. So it's gone 8 hours into the story. I need to restart and listen again.

Sometimes I discover that the book is awful and I return it, but it does look like I've "listened" to hours of it.

I really only get sci-fi audiobooks. Some sci-fi, especially older stuff, is very very sexist. The female characters are only there to provide a motivation or a distraction for the male characters or they're just stupid. If those female characters arent introduced until later in the book then again, I'm returning it after a few hours of listening.

I didnt mean, "listen to a whole book and then return it like it's a library."

Just, "if a book is shit but you've fallen asleep and it's played all the way through, you can still return it."

See my post above.

When I'm listening to a book and the author brings in terribly written female characters to distract the heroic, manly man space pilot then I'm returning it. I dont care if it's 5 hours in or if I fell asleep during my first listen to it's played all the way through. Luckily, audible allow you to return it.

I don't know if this is useful or not

I have kindle unlimited at 7.99 a month.
Alexa reads me my books through any of my echo devices and also my android devices through the alexa app.
Alexa does have issues with a lot of words but it just means I shout at her instead of my TV.
Audible, for me is way too expensive. I listen to too many books.

With kindle unlimited, you also get access to hundreds of audible books.

They wont always have the audible book you want on kindle unlimited but there are lots. So you dont need to listen to a robot voice all the time!

Why so rude op? People are trying to help you.

9 times out of 10 even an audible addition cost nearly £4.
Alexas voice isn't robotic, she just can't differentiate between languages sometimes.
It sometimes becomes the audible equivalent of shouting at the tv.