I sold a valuable handbag to someone registered in the US and living in Estonia. I put SORRY NO INTERNATIONAL BUYERS in the listing but the cow completely disregarded this and bid without a warning or even asking for a postage quote.
There was a lot of interest and bidding on the bag so I'm furious that this is happening. She hasn't paid either.
I sent her a message saying she shouldn't have bid but now that she has she can either accept the postage by international tracked mail, full responsibility if it gets lost and understanding it's non returnable even if she thinks it's been misrepresented (which is not of course but it's just one of the reasons why I wouldn't send something used and valuable overseas) or I can cancel the purchase. I sent her an invoice with the postage price. She hasn't paid and hasn't replied 
What do I do?