My understanding is that shipped eggs are a crap shoot--maybe they'll be fine, maybe the won't, and your hatch rate will be relatively low. If you can find local eggs, that would be best--I would try craigslist. Runners are becoming more common, so there is probably someone with a small flock that would be glad to sell you a dozen or so. When they hatch, you can raise them to about four-five weeks when you should be able to sex them easily, and then sell the females back to the breeder or on craigslist--females should sell pretty well.
Good luck!