Well, it shouldn't be any different. I know that some post offices will charge more if you put germany in the address, but if you put Mill Hill, London that will stop them charging extra. Unfortunately most PO's don't know it costs nothing extra, and so you basically need to argue with them!
I don't think Tiffers had to pay any extra to send my Halloween stuff over.
I don't think Tiffers had to pay any extra to send my Halloween stuff over.