international shipping is very worth it, since i opened up my shop i have sent to Canada, France, England, Greece and Australia( twice!) so far only one of my items cost more than i got for it even with shipping, but that was my fault and I now that i know this i was able to fix the shipping. Hell, sending an item to Australia, cost less than sending something ( of less weight) to Texas.
My first ever sale was to Australia
it can be a bit over priced but it is definitely something to do research on. You can go to the us postal serves website and do some searching to get an idea of how much money it would cost to send stuff of different sizes and different weights to different countries
good luck :)