Marketplace puts retailers' return policies to the test. Out of luck, because you've lost your receipt? Don't have the original packaging? Missed the 30-day deadline? Retailers don't have to give your money back, or offer an exchange or a credit. That means a successful return often comes down to a shopper's individual abilities. We teach three Canadians the secrets of negotiation - then challenge them to do successful returns. We reveal what it takes to get past the point of no returns.