theft. im gonna say 100% of sellers got burned once and once was all it took for them to not want to lose their nice cards to international crooks.
And id say about less then 5% WANT to pay extra 20 bucks for international tracking and signature confirmation.
Be sure to send ebay a great big thank you note.
certain countries scare me i know personally honk kong and phillipines have terrible theft within there post office system. Other countries, like UK countries and austrailia ive never had a problem with.