Guess, I should add to that. Whole corn doesn't do the birds any favors. It's harder for them to digest, and in general they don't seem to like it. We did find a "grain mix" we were getting as a treat. One scoop a day more or less. It's gotten pretty expensive, so switching back to rolled corn when we're out. (The whole corn was a screw up at the mill, I didn't notice it till I went to refill the bin.)
Also, another thought. Pine bedding cost has increased a good but recently. Was ~$5.00 for 3 cubic feet now it's $7.49. Straw is up close to $10.00 bake now too. Give or take, in a years time we go through 2 bags of bedding a month and about a bake of straw every 3 months. That adds some cost too. I don't count that, since it all goes on the compost pile, but it does add some extra cost. Supplements add up too. Wife was giving them an electrolyte and pro biotic when it got really hot out. I can't say I ever noticed a difference. She claims they seemed to be doing a lot better in the heat when she put it out. (One scoop per gallon, she'd mix a fresh gallon daily. Was a pain, as we had to keep the dogs out of it. Would make them sick or huve them the runs or something like that )
Last thought on over all cost, cost of housing/ making a run. Since I tore the old wood shed down. we're going to be moving the coop and putting up a proper/ larger semi covered run for them. Any cost savings we would have had from money saved vs buying eggs (and I can't stand store bought eggs anymore.) Would get burned up in materials for building/ moving the coop and run.
Really it just comes down to (for me) we like having the fresh eggs, less bugs and they are quite entertaining, ie just as much pets as "farm" animals.
Side note, the 2 roosters didn't make it the summer either. I could only take crowing at 3am so many days in a row and they got awful ballsy when they got bigger. They met an early demise.