Amex Offers are rebates on eligible purchases you make with your American Express card. These are larger rebates, but they also require you to make larger purchases. For example, when you spend more than $150 on RayBans, you’ll get $30 back. Or recently, if you spent $200 at Nespresso, you got $50 back. Others involve more practical expenses, such as 15% off your car insurance payment.