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Editor's Notes & Price Research
Please see offer page for full terms and conditions. This is a limited time offer. The promotion will end at 11:59 PT on 12/31/2019. Amazon.com reserves the right to cancel or modify this offer at any time. The maximum benefit you may receive from this offer is $30 per eligible Membership Rewards enrolled Card.
If you are linking your Amex Rewards account to Amazon for the first time then it may take a day before you may become "eligible" for the promotion.
This offer seems to work on 3rd party gift cards such as Whole Foods and Safeway, see forum thread for additional discussion and ideas. -qwikwit