One of my higher priced eBay items hadn't been paid for yet so I went to send an invoice and it shows their address in Mexico. I was a little surprized because my auction states US only. Is there anything I should keep in mind to ship to them? I stopped doing international shipping a while ago because of all the aditional headaches.

The next bidder is in Austrailia(though I think they might be a member here). Do US only items show up in international listings or something???