A lesson to be learnt here. I listed a couple of Items on Ebay UK and specified UK Postage Only. I didn't however flag in Buyer preferences that only bids from UK would be accepted. A user in Germany clicked on to buy the items WITHOUT contacting me to ask if I would ship abroad or what the cost would be. I politely pointed out that I had specified UK Post only and I wasn't prepared to risk sending Item abroad.
The User got very abusive and INSISTED that I ship the goods threatening negative feedback if I didn't. I again explained that I wasn't prepared to risk shipping abroad. He left negative feedback and refused to cancel the transaction leaving me the cost of the listing and no sale..
I think the lesson is to be VERY clear in the text of your listing where you are prepared to ship to even if you think that you have your preferences set up correctly.