Congratulations! You have just purchased egg laying hens! Nothing wrong with that at all. So someone was off a bit with thier age. No worries, you now have fresh eggs.
Thanks every one. He must have misprinted his add. At least I will not have to wait for eggs as I am getting about a dozen a week right now and they are getting bigger. He told me they were Bovan chickens by the way. A hybrid that are meant as layers. They are very friendly for the most part and do not mind being picked up. One is an escape artist.