You pay the same to get stuff sent from USA, so why wouldn't it be the same the other way?
I agree its not ideal when selling on Ebay for international listings, usually ppl will balk at $25 dollars for a $3 dollar card.
But you could send a bulk lot of cards you plan on listing to Ship My Cards, who are based in Arizona.
They will store them in your account and will take pictures of all the cards you plan to list for a fee.
You can list cards on Ebay US and pay smc a fee , but they will happily send out cards for you with whatever shipping requirements you desire.
Easier moving cheaper cards then the other options which are to send in an envelope and have zero tracking, or charge $25 dollars shipping which 90% of ppl will ignore your listing.