All products with a 30-day, money-back guarantee, based on the delivery date as provided to us by our mail provider. To receive a full refund, please email us at firstname.lastname@example.org. They will provide you with shipping instructions and a return authorization (RA) number. For products that were delivered in excess of the 30 days, we will refund the full amount less a ten percent (10%) restocking fee. After 90 days, your order is considered final and refunds will not be given. The invoice that was sent to you via e-mail immediately following your order confirmation will indicate the product(s) that are considered “standard”.