Amazon: Select Amex Rewards Cardholders: Pay w/ Points, Get Up To 40% Off (Max $40) & More

Amazon is offering a promotion for select Amex Rewards cardholders where you can get up to 40% off (Max $40) and more. The eligibility selection is still rolling out, so if you see a blank page when you click the link, try checking in the morning. Example offers mentioned in the comments include 10% Off ($10 Max), 15% Off ($15 Max), and 30% Off ($30 Max).