Re: Insuring Traded Items
You don't have to provide a receipt. Just some kind of proof of value of whatever is in the package. When I had to open an insurance claim for a damaged Blackberry phone, I just printed out a page on eBay showing how much the Blackberry phone was going for now. (I claimed $100, which was how much coverage I had paid for, and the USPS ended up paying $84).
Make sure that you create an item-by-item list of what's in there when you buy the insurance.