I do not understand the mathematics behind the dilemma. I'm assuming only the firts chicks cost money, because down the line they will breed.
But feeding them, housing them - vitamins and doctoring costs a lot of money.
So anyone with couple or more chickens - how much does it cost to have them on the table? And realistically how many eggs do you get?
You could save money with brewing your own beer, you would just need a good source of barley and malt it yourself. The malt is too expensive to save much if anything on making beer.
The mormans or latter day saints forget which are all about stockpiling, and they operate bulk stores to prepare for the end of times or whatever, and they sell 50 lb sacks for a decent price I hear, but there aren't any near me.