Our policy states that we do not offer discounts post-purchase, but we are willing to hear you out on a case-by-case basis. If you missed the opportunity to add a coupon code to your order, what we can do to help you is limited - depending on when you request the change and when our agents see it. Usually, by this time, the order has been transferred to the warehouse for fulfillment and we can no longer modify any pricing. This requires us canceling your order and then asking you to reorder with the coupon code added. So if you have this request, please include that you want to cancel your order.