Winteree, I'm sorry for your frustration with the eggs but I wonder if you are confusing the term "infertile" with "failure to develop" - they are two very different things. I see way too many times where an egg fails to develop and the immediate conclusion jumped to is that the eggs are "infertile".
Fertility is when the rooster/tom/drake/gander has mated the female and introduced his sperm to the egg. An egg that is fertile will - under the right conditions - develop into a fetus and eventually into a chick/poult/duckling/gosling.
However there are many things along the way that can affect the ability of the egg to develop correctly. Sitting out in the sun and baking. Or the opposite - being left at a cold temperature for too long and freezing. A temperature that is too low for the embryo to sustain development. Poor genetics.
When you throw shipping into the mix, you have even more factors to consider. Many experienced hatchers - who expect 100% development from their own eggs, are happy with 50% from shipped eggs. Arielle mentioned many of the challenges faced by shipped eggs. I personally had an expensive shipment of marans eggs develop and hatch out a single chick. It is frustrating and heartbreaking and when you add up the cost, you realize that one chick is a very expensive little chick. But it is the reality with shipped eggs. And it is the risk we take when we order shipped eggs.
There are unscrupulous people who knowingly ship infertile eggs. But a hatchery has a reputation at stake and cannot afford to do the same. It is always possible for an egg or two to slip through unfertilized, even from a male who is doing his job. You can't know without cracking them and looking for the bullseye if a specific egg is fertile or not. But the odds are very much in favor of the hatchery sending fertile eggs and the failure to develop being either shipping or incubation conditions - or a combination of the two.