The seller buys the insurance and they are the party that is indemnified against loss. They have to initiate a loss claim. Pics, addresses, ph#'s do nothing if the seller wants to rip you off. I've sold and shipped thousands of items since 2007 and have almost exclusively used USPS bc of price and convenience. In that time and volume, I think I've had exactly two problems with packages not arriving, and one was my fault for poor packing of a large, heavy, oddly shaped item- lesson learned. I've had a few items that were delayed for a day or three, but most are delivered on time and in good condition. I do remember one item that took several days longer than anticipated, but the buyer lived in the middle of the desert and he said that was pretty much standard fare. I do take care to use lots of bubble wrap, reinforce areas where thin, heavy items might impact if tossed. If there's any doubt, I double box with a layer of bubble wrap bw the boxes. I use labels printed from the USPS site and completely seal them with packing tape and have the bar code and receiving party's name prominently displayed- packing tape and cardboard is cheap.