Get a book up to the value of $3, compliments of Google Play. Choose from the curated selection of titles below. Redeem your offer by 18 Feb 2016*.
https://play.google.com/store/books/collection/p3_details_14…
*Good for one copy of a book from eligible titles. Book may be redeemed only on Google Play from compatible internet connected devices. Offer expires on 18 Feb 2016. Offer good in Australia only. See Promotional Terms for more information. Enjoy a book, on us.
Click on the deal and sign in with your google account to get free $3 value (It will be added into "Rewards" section under Google Play "My Account")
Not sure if it works with any other book or something else?
Updated: If anything is eligible you will see the text "You can apply your book reward at the checkout" under the title
All books here are free
where does paypal come into this?