I asked a seller on Ebay if he would include a heat pack in the eggs as it is very cold here. Check out his arrogant reply: "It is not at all a good idea so any breeder who knows their stuff will tell you NO. Eggs I have shipped have never frozen even ones shipped to the North Pole, check my feedback. Eggs should be stored ideally at anywhere from 45 to 65 degrees prior to setting anyway. You must be new to this or you would know you never want to heat eggs before setting them . Let me know if you have anymore questions and thanks for asking. My email is......" If he had answered nicely, I would have considered buying them. After his remark....NO way in, well, you know.