Heather and Jen complain to Greg about all the awful gifts that they have received from Joan over the years. They realize this is the time to sell the items at a garage sale, but they can’t sell the stuff at Joan’s garage sell. They decide to host a simultaneous garage sale that focuses only on the bad gifts that they have received. This is a good example to show that the value Joan paid for the gifts will be much higher than the price Heather and Jen could expect to receive from a garage sale, which can be used to show the loss in economic surplus from this exchange.