If by "stationed" you mean in the US Armed Forces overseas they will still be shipping to an APO (or similar) in the USA
I have a no sales outside the country policy on
ebay but I have easily shipped to Germany many times and paid US rates...
If you're not in the service then it IS a pain to ship overseas.... customs form says on the outside of the package how much it's worth so they my as well just stamp "Steal Me" on the outside...sometimes it takes months to deliver a package. Not worth it....
Some do it routinely but I like closure with my sales and follow tracking until it's delivered...with overseas it just enters the abyss and that's that....