check you account if you have this big red square saying “Get $10 Promotion Credits When You Buy $50 or More Gift Card” on the front page.
Terms & Conditions: This offer is valid for a limited time only and subject to availability. In order to qualify for the promotional credit, you must: (1) purchase at least $50 in eligible Amazon.com.au Gift Cards ("GCs") in a single order at Amazon.com.au between 12:01am (AEDT) on 26 December 2019 and 11:59 PM (AEDT) on 27 December 2019 (“Promotional Period”); and (2) enter the promotional code "W5CFPG2JXDZ8" in the "Gift Cards & Promotional Codes" box when you check out. Amazon.com.au Gift Card purchases must total at least $50 in combined value, and the Amazon.com.au Gift Card(s) must be purchased in a single order at Amazon.com.au during the Promotional Period. Amazon.com.au Gift Cards are subject to Terms and Conditions. Taxes, shipping and handling, and gift wrap charges, if applicable, do not apply when determining the minimum purchase amount. For qualifying purchases, a promotional credit of $10.00 will be automatically applied to the Amazon.com.au account that was used to purchase the Amazon.com.au Gift Card(s) after the qualifying order has been completed or, where applicable, the order has shipped. An email notification will be sent to the primary email address associated with the Amazon.com.au account used to purchase the Amazon.com.au Gift Card(s) within two (2) business days of the qualifying purchase being completed, or if delivered by mail, when shipped. Limit one promotional credit per Amazon.com.au account. This promotional credit entitles any customer to $10.00 off their purchase of “eligible items” shipped and sold by Amazon AU. “Eligible items” excludes products sold by third party sellers including Amazon US (Amazon Global Store) even if “fulfilled by Amazon”, digital purchases such as e-books, products that are not in new condition such as renewed products, subscriptions such as Prime Video and Audible, gift cards and postage or delivery rates. Amazon AU’s standard delivery rates and policies apply to any purchase made pursuant to the offer. The promotional credit can only be redeemed once per customer on eligible items and cannot be used in conjunction with any other offer. If Amazon considers a customer to be operating multiple accounts, those accounts will, for the purposes of this offer, be treated as one customer. If you return any item purchased using the promotional credit, Amazon AU will only refund the price actually paid for the item (that is, less the value of the promotional credit) and the promotional credit will be invalidated. The promotional credit is not transferable and may not be resold, redeemed for or applied toward the purchase of any gift cards sold at Amazon.com.au. The maximum benefit you may receive from this offer is $10.00. Offer ends at 11:59 PM (AEDT) on 27 December 2019. The promotional credit expires at 11:59 PM (AEDT) on 1 March 2020.
The $10 promotional credit didn't get applied to my order but when I contacted Amazon they said there's no need to worry it just takes 2 business days and it will happen automatically.