Generally speaking, you can save on return shipping for any purchase you make through FreeShipping.com. Certain purchases, however, may not qualify for free return shipping via FedEx Ground. For instance, if the retailer already offers free return shipping, the purchase won't be eligible for free return shipping via FedEx Ground. Also, the destination for a return shipment must be a valid commercial address in the 48 contiguous United States, so if a retailer’s return address is in Hawaii or Alaska, for example, you won’t be able to ship it via FedEx Ground. Similarly, shipments sent to residential addresses, P.O. boxes, or other non-commercial locations do not qualify for savings through the program. However, if you do have to pay for return shipping, you can claim a rebate of up to $10 on your return shipping charge.