$10 international air shipping, since there is an envolope that is a set size and no matter what weight you put in it its the same price, and i recon you can fit a set of eyes in it since i have had 2 battey packs and 2 chargers sent over in one before
If he puts them in an envelope it shouldn't cost more than a couple bucks to post unless he's screwing you on shipping. $10 is outrageous for shipping a pair of eyes.
Edit add: I have the WAS eyes and they work great.