I personally am not comfortable with it so I passed on the sales I could have made. I work with Chinese client, he wanted me to sell him fertile eggs that have been incubated to 18 days. They then boil and eat the embryo in the shell (kinda like a hard boiled egg). I would gladly sell them the fertile eggs if they want to incubate their own. But I will not pull out an egg from the incubator that has progressed that far, to give to some one to eat!