Well, let's see. My feed runs me roughly thirty four cents a pound. It takes about five pounds of feed to produce a dozen eggs so I have about $1.70 per dozen in feed. I sell my eggs for $3.00 a dozen so that leaves $1.30 a dozen to cover all other costs such as tractors, waterers, feeders, and so on. But I get to amortize those out over their expected life spans. I'll typically get at least four years from a waterer. I've never had a feeder wear out yet and I'm not sure how long the tractors will last. My oldest is now over four years old and still in use. I learned a lot in building later models so I expect the newer ones will last still longer.
I don't feed a lot of expensive "treats" just two thirds Layena to one third game bird starter for a ration that provides 20% protein. I could cut out the gamebird starter but even if I eliminated it entirely that would only reduce my feed cost by 1.3 cents a pound and I like the way the birds perform on this blend than I do when I was using straight Layena.
For my actual working birds I am making a profit. It's the boys in the bachelor pen and the older birds in the fixed henyard that don't lay very well that aren't making a profit, but those are the birds I breed with for my own personal projects.