How does DS get audio books using his Google Play voucher

[Linus33]

We've downloaded the Google Play voucher so he has the money to spend. He wants to buy some audio books so we've downloaded an audio app from Google Play store but we can't find any books that he can buy from Google Play. We managed to buy a book from Audible but I had to pay for that using my Amazon account.

Any ideas?

Doesn't look like Google play awaresell them

Thanks Theas, that's what I thought but wasn't sure if I was just being stoopid !