So, doing a little math, a hen will eat 104 pounds of food in a year.
My organic feed costs $26/50lb bag, but I can get it wholesale for $15/50 lb which brings it to 33 cents a pound. Times 52 equals roughly $17/year. If the hen lays 300 eggs per year, which is 25 dozen, and you can get $4/doz for organic, free range eggs, that gives you $100/yr per hen minus the $17 in feed or $83/yr profit per bird.
If you have 100 laying hens, you would make $8300 profit. You can also sell the hens for up to $10 each when they are two to three years old to local Mexicans so that maybe gives you another $500/yr if you are selling half the flock, for a total of $8700. You have to also subtract the chick purchase costs, ($100/ 25) chick feed, electricity to run the brooders, and coop construction costs. EVen, so, it sounds like a plan.
Obviously, that isn't everthing. You may not get 300 eggs per year per bird unless you run lights in the Winter, for example, and may not have continuous market for the eggs or not at that price. They sell in the health food stores here for $5/doz. and at farmer's markets for $4 to $5. You could do an egg CSA to guarantee the sales at maybe $3.50/doz. Even with all of that I would think you should be able to clear $7K a year on 100 chickens.
People around here who are selling eggs have a waiting list of customers.
Am I missing something?