By redeeming this Subscribe and Save offer at checkout, you agree to our Terms and authorize a charge of $0.00 for today’s order, and authorize your first Subscribe and Save subscription of 1x Drone Propeller Set Upgrade (Set of 8) to be shipped to you 30 days from today for the 20% discounted price of $0.00 Every 30 days thereafter, the 1x Drone Propeller Set Upgrade (Set of 8) you ordered today from our online store will be shipped to the address on file, and the discounted price of $0.00 will be charged to the card on file until you cancel. You can alter or cancel the Subscribe and Save membership anytime by contacting customer service available 24-7.