This hasn't happened to me yet, but I would just want to be prepare if this ever does since I did take the risk to send a bag off to a buyer registered in the US but has a confirmed US Shipping address (which makes me not eligible for paypal's seller protection). I shipped the item with insurance plus signature required. I would like to know if for any reason, the buyer files a charge back on me, what should I do. I read here a while back there is some kind of claim that I can file against the charge back, but don't remember exactly what it was. Thanks so much!