To get the deal:
1. Click here
to check if you are eligible for promotion
2. Click here
to add Discover Card.
3. Select eligible products worth $10.01 or more, sold and shipped by Amazon.com. Then enter your promotional code at checkout: 21DISCOVER10
4. Checkout with Newly added Discover Card as payment method
5. $10 off will reflect on the final order page if the items are eligible for the promotion.