Problem with raising chickens in the "ideal" set up they are describing (where they roam around without any confinement) is it only works for a short time before predators find out about it. I keep my chickens in movable tractors which while not huge, keep them safe from predators. It is a good compromise, I still get the good eggs and I don't have to go months where I don't have any chickens due to predators and having to wait for new chickens to get to laying age. Rest of it I agree with, there is almost no reason to buy store eggs unless you are living in a city - you can generally find someone with chickens and they will gladly sell you eggs for a very reasonable price or barter. Heck I often just give my eggs away, if you raise chickens odds are you have more eggs than your family can ever eat.