It is my belief that Jill is just offering advice on how to avoid these types of concerns in the future. If you mail a package get a delivery confirmation # and share it with the buyer. PURCHASE insurance if you don't want to self insure. I checked Jill's feedback and noticed that on the last transactions that in her selling, she shipped out buyers packages with insurance. I believe that this should be common practice so if the package does not arrive that you as a seller are covered and can show through tracking that the package was accepted by USPS and follow it to the buyer.