Anybody ever have a problem with an ebay seller where they try to charge you extra for shipping? I bought a pair of Oakleys (Of course). For shipping from San Francisco to Northern VA, through UPS it ended up calculating at $12.62. Seemed a little high, but I paid immediately through paypal. The buyer contacts me and tells me that he miscalculated and that it was actually closer to $20 with insurance. I already thought $12.62 sounded kinda absurd for a pair of glasses. He proceeds to tell me that he can refund the money and send a new invoice, or I can pay the difference to his paypal account. From what I understand... 1: The seller can't charge additional shipping. And 2: Insurance is his option since it protects the seller, not the buyer. Am I wrong to tell the seller to piss off (In a nice way that is)?