Spotted this when I signed in this morning. May be targeted!
How to claim
These terms and conditions apply to the offer where the first 5,000 eligible Amazon.com.au customers located in select areas can receive $10 off a purchase of $59 or more on “eligible items” made in the Amazon App when they use the promotional code HAPPY10 (“Offer”). The Offer ends at 11.59pm (Sydney time) on 22/08/25.
Promotional offer is available valid for a limited time only Amazon reserves the right to modify or cancel it at any time.
For the purpose of these terms and conditions "eligible items" refers to any product sold in the Amazon App but does not apply to (i) products sold by Amazon US, Amazon UK, Amazon Japan, or Amazon Germany Global Stores even if fulfilled by Amazon AU; (ii) clothing apparel; (iii) alcohol; (iv) digital purchases such as e-books or subscriptions such as Prime Video and Audible; (v) gift cards; or (vi) postage or delivery rates. To redeem this Offer, add one or more eligible items to your cart in the Amazon App, then at Checkout enter the promotional code HAPPY10 and the discount will be applied to the eligible items.
If you do not add any eligible items to your cart, the promotional code and this Offer will not apply. The promotional code is single use and can only be redeemed once by eligible customers. If you cancel or return any eligible item purchased using the promotional code, you will only be refunded the price paid for those eligible items (that is, less the value of the promotional code) and the promotional code will be invalidated.
This Offer cannot be used in conjunction with any other offer. This Offer cannot be used on pre-existing orders. This Offer does not apply to orders placed with 1-Click. This Offer is not transferable and may not be resold. This Offer is subject to availability and may be withdrawn or amended without notice. This Offer is not redeemable for cash. The Amazon.com.au Conditions of Use and Sale apply. Delivery charges will be applied to each item in accordance with the Amazon.com.au standard delivery rates and policies.
If you violate any terms and conditions of this Offer, your use of the promotional code will be invalid, and you will not be eligible for this Offer. Amazon may elect to cancel a transaction (and refund monies paid) if it considers that a customer is violating these terms or to address suspected misuse, abuse or fraud. Amazon reserves the right to cancel this Offer at any time where it suspects misuse, abuse or fraud.
Edit: Also try APPY10 if HAPPY10 doesn't work, thanks RogerLoger
Mod, stack with:
If that doesn't work, enter code APPY10 at checkout.