This was my first year, and I wanted to see what people thought about my chickens raised "on pasture" (i.e. my back yard). I gave some away just so people would give me their opinion. But a few people insisted on paying, so I came up with $7/bird, but told them that it would probably be around $10-$12 next year. With feed prices steadily increasing, I think it would have to be at least $12, though.
My costs were about $1 + $2 processing per chicken, plus feed for 9.5 weeks. If I recall correctly, it ended up being roughly one 50lb bag of feed per chicken on average. With feed being about $12/bag now, I should be charging at least $15, just to break even, but right now I'm afraid of not having enough customers, so I don't mind operating at a slight loss, if I end up with a handful of loyal customers. If things take off, I'll raise the price, or process them a week sooner (8.5 weeks). It's just a hobby for me, anyway, regardless.