I bought a total of 8 dozen eggs this past spring and only had 25 chicks hatch. The eggs that produced the most chicks came from less than 45 miles away. I think the post office is very rough on eggs even when the eggs are marked fragile. Also , if the eggs travel by air, I think , the high altitudes are deadly for the eggs. I let the eggs sit for at least 24 hours before I placed them in the incubator. I will say that from every batch of eggs I bought on eggbid, at least 6 did hatch each time so it was not a total failure in any instance. I will try again this next spring because I would like so Blue Orpingtons and some Blue laced red wyandottes.
I would , however, order eggs as close to me as possible and make sure the weather is not too cold or too hot when the eggs will be shipped.
Good luck just don't expect too much from purchased eggs.