Return shipping has always been a hidden cost for online shoppers, because retailers are often hesitant to pay for return shipping. The launch of Return Saver, a new program from Clarus Marketing Group, solves that problem for consumers. For $49 a year, online shoppers enjoy free return shipping via FedEx Ground to virtually any retailer in the country — including Amazon.com, which takes return shipping costs out of purchase refunds, even for Prime members.