Pre-order any Audible book, get $5 coupon $1.59

Audible is running a deal where you will receive a $5 coupon when you preorder ANY book. The pre-order price for this book is only $1.59, so you will make a few bucks.

https://www.audible.com/pd/Kids/C...B07CGPK587

This is a book that is only $1.35, but it's a German book, and the T&C say that the offer is not valid from any other seller, including audible.co.uk. It should be fine, but I just ordered the first book.
https://www.audible.com/pd/Sci-Fi...B07CVLF1ZZ

Here's the full list of pre-orders [audible.com], and the T&C:

Promotion available to Audible members only. Eligible customers who pre-order a book between May 13, 2018 and May 18, 2018will receive a $5 coupon. Pre-order must not be cancelled prior to May 18. Promotion applies only to audio products sold by audible.com. The same items sold by other sellers (e.g., audible.co.uk) do not qualify. Coupons cannot be resold, transferred for value, redeemed for cash or applied to any other Audible account, except where required by law. Promotion may not be combined with other offers. An Audible account is required to be eligible for this promotion. Limit one reward per customer. Your coupon for $5 will be sent through a link in a separate email no later than May 24 and will be applied to non-credit purchases of audio products upon checkout. The $5 coupon will be redeemable until June 23 and will expire 30 days after redemption. Other terms and conditions apply, including those available here. If you violate any of the terms or conditions, the promotion will be invalid, and the offer will not apply. Audible reserves the right to modify or cancel at any time. Void where prohibited.