eBay is doing a program for international buyers where seller posts to a UK eBay distribution center and then rest is taken care of. You can opt out of that when listing I believe but why would you if you are only going to ship to a UK address? Not a bad thing if that opens up more opportunities to sell.
The reasons I dont sell my stuff for shipping abroad isnt because I cant be bothered to or its impossible to arrange a courier to do so as indeed it is easy.
Its just in my past experience far more likely for things to go wrong.
Whether you are shipping abroad or its Ebay shipping it abroad, its still going abroad?