Get $10 Credit for Using 3 Audible Credits by 12/20
I just received an offer for a $10 account credit for using 3 Audible Credits for audiobooks.
PSA: Audible Credits/Books can be returned while retaining the original book on your device. It's a very generous arrangement. Email or chat up customer service and they will return your credit so you can buy a different book (while retaining the original book).