Location is important but so is the egg.
My hens are Fed Organic, non-soy feed, they have access to the outside 24/7 and the are allowed to free range 1-2 hours per day. They get treats and are treated as pets.
I have a small loyal following that pays $3 / dozen using recycled cartons. Many of them used to buy Caged Free, Organic Eggs or Omega 3 eggs at the store. Those now cost more than $3/doz at our local store. You can get farm fresh eggs on craigslist for 1.50 and 2.00 but I can still get $3 else where.
Let people know your raising/chicken practices there are many people that care as much about the how as the fresh and you only need a few loyal customers unless you have tons of chickens. I sell 3 to 4 dozen a week at $3/doz which pays for the feed and bedding and gives me 1-2 dozen a week to eat free. (of course this doesn't count time).
Edited to add: I have a nice variety of color and I think that is a plus. Each pack normally gets 1-2 blues, 1-2 greens, a cherry, a speckled, and some light to medium browns.