Welcome to BYC. I think your question has already been well answered, so I'll just wish you the best of luck on your hatch, wherever the eggs come from.
Hi and welcome to BYC We're so happy you've decided to join us
I agree with the others, if you get fairly fresh fertile eggs from a store you can hatch them, but you're way better off getting eggs from a reputable breeder or even day old chicks. A 50% hatch rate or lower on shipped eggs is not uncommon.