I have 15 chickens in the northeast. They produce roughly 1 egg per chicken per day. The colder months slow production down slightly.(you can use a light in the coop to increase egg laying)

It costs me about 10 cents to produce 1 egg. I sell any excess to neighbors for $3/dozen.

The eggs that they lay taste incredible and depending on the breed will produce huge eggs.

For me, it's been well worth it.