if the birds are just for you, I'd say that you should do it. I've noticed that the quality of the chicken is far superior to that of the supermarket. You can't use the quantity/price comparison to make your decision. I can eat 5 times as much supermarket chicken and not feel full compared to my homegrown chickens. The energy content in homegrown chickens is much higher and you'll know what I mean as soon as your eat your first one. I can go 8-10 hours on just one half of a chicken breast. (full left or right side of chicken breast). I couldn't even come close to doing that with a supermarket bird. So I'm just saying there may be variables involved that you're not aware of. Don't get sucked into evaluating your decision solely on quantity versus cost. That's what Commercial Food wants you to do.
Dan
Dan