To the OP you might want to make some adjustments in your goal. When times are hard and it comes down to it people will buy what they can afford to feed themselves and the family. There is nothing wrong with country folk giving to others or selling for minimal profit, it is the country way.
Hatching eggs sell for more than table eggs. Many people do not care how a egg is raised and do not make the connection when eating eggs. But they certainly are aware of the conditions that store bought chickens are raised in. Maybe you should consider processing some of your birds. Maybe raising meat birds with your egg layers. I have not been able to find Cornish Bantam eggs and would have paid more than $4.00 a dozen for them and they eat less than your laying birds. Actually I would have paid up to $20 a dozen now that is 5 times what you are asking people to charge for eggs. The reason I picked Cornish Bantams is that not as many people are doing them. REFOCUS REGROUP and RESTRUCTURE some of the changes I suggest will not set you back much. Just a suggestion.
There is a large following of game fowl owners and not for sport, it is the beauty and hardiness of the birds. People, myself included pay good money for game fowl eggs. I have paid as much as $10 a egg for pumpkins. If what you are doing does not work do not blame others, just change focus.