In order to sell them at 9.00 dollars you would have to be feeding very cheap feed to make any money at all. the chicks will be around 1.50 each. It will take about 15lbs of feed. If you can get your feed for 500.00 per ton(which I doubt) that would be 3.75 per bird. You will spend money on feeders, waterers, brooders, and electricity. If you raise them on pasture you will need some sort of field pen and or fencing. When it is time to butcher if you are doing any quantity then you will need to either pay someone, buy processing equipment, or find a coop that rents it out (I have seen this for 50.00/day). You will need propane for the scalder, ice for the chill tank, and bags to package the birds in. This stuff all adds up.
Just the consumables for 50 birds would be
chicks75.00
feed 190.00
propane 10.00
ice 25.00
rental 50.00
shrink bags 12.50
total 365.00
I do not believe you will find feed that cheap, and at 9.00 per bird and no death loss you would only invoice 450.00. that would leave less than 100.00 to use for brooding and field supplies, electricity, water, and labor. And as for labor, I have heard somewhere and agree with the statement "the chore that is carring water to chickens can not be overstated."
I do raise meat chickens, and like someone else on here stated, I do a soy and corn free(non gmo) feed and I charge 4.50 per lb. With a 4.5 lb average I get about 20.00 per bird. I also order in grain by the truck load and make my own feed, have a wholesale account with a hatchery and get my chicks for less, and own my own processing equipment that we have been using for several years and prorate the expense on. In other words I can do almost every step cheaper than some one starting out and I would loose money at 9.00 per bird