That's for city chickens!
My family was farmer types that never spent a single red cent on a chicken, or any other fowl. Any birds we had were purely self substaining free ranging. We had a hundred or so cattle & hogs too and none of them ever spent the night in a barn or ate store bought feed.
I'm no longer a farmer type, just a country type so now I have to buy a bit of chicken feed. It costs me roughly $1 a day to feed 30 free range hens.
I have 2 pens totaling 1,200+ sq ft that they sleep in. These pens are easily subdivided for brooder, grower, dinner roosters, quail, or whatever pens when the need arises, cost me $40 to build.
I haven't had a proper coop since the 1970's, they sleep on roost poles with a piece of tin overhead and egg boxes are wooden boxes setting on blocks or nailed to the wall.
One day my wife told me the baby chicks were talking about me, they were walking around the pen saying "Cheap, cheap, cheap!"
I can produce eggs in a cost effective manner but not meat with the breeds I have now. I could raise cost effective meat birds if I wanted to, but it would take more time & effort than I care to put out.