We are selling ours for $4 a dozen... but we cheated a bit. First, my sweety took in hardboiled eggs for snacking on at work, and let a few friends have one now and then. Word got out about how creamy the yolks were (not chalky and pale yellow). Then, when they asked about them, we gave my sweety's coworkers 3 of our eggs free and told them to simply scramble them and to scramble 3 storebought and then do a taste test with their family! They were MAJORLY impressed! We now have more requests then eggs (we could sell 6 dozen a week just to the "regular" buyers!). We do give them a discount if they bring back the carton, so they pay $3.50 if they swap an empty carton for a full one.
Our chickens are pasture raised with supplemented food (2 parts crumbles to one part scratch for winter) and fresh greens a few times a week (turnip, kale, collard... whatever is on sale at the grocery store for now. But once I get a cold frame next year... LOL). We also have pet parrots, and when we clean the cages we dump them in the enclosure, parrots waste a LOT of expensive food - but the chickens are more than happy to get us some of our money back!