I don't have a Discover card, but maybe y'all do. 
Eligible Items
1. Add eligible item(s) to your Shopping Cart.
2. Ship your item(s) to a single address.
3. IMPORTANT: You must select One-Day Shipping at checkout.
PRIME members: Select One-Day shipping for $3.99.
4. You must select your Discover Card as your method of payment.
5. Enter promo code "DSCVRSHP" in the "Have any gift certificates or promotional claim codes?" area and click the "Apply" button.
6. The shipping discount will be reflected in the Order Summary.
7. Enjoy free shipping on qualified items shipped to your specified address.
Eligible Items
1. Add eligible item(s) to your Shopping Cart.
2. Ship your item(s) to a single address.
3. IMPORTANT: You must select One-Day Shipping at checkout.
PRIME members: Select One-Day shipping for $3.99.
4. You must select your Discover Card as your method of payment.
5. Enter promo code "DSCVRSHP" in the "Have any gift certificates or promotional claim codes?" area and click the "Apply" button.
6. The shipping discount will be reflected in the Order Summary.
7. Enjoy free shipping on qualified items shipped to your specified address.
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