I double check a bulletin that I was sent back in November from the Food and Agricultural Product Center at OK State.
So it looks like to sell at a Farmer's Market in Oklahoma you have to go through all the same commercial regulations that are required to get eggs into a grocery store. Oklahoma only grants the exemption to an egg licence for sales from the farm.
Texas allowed the same exemption for sales from the farm, but additionally allowed this exemption for sales at Farmer's Markets. Sales at public locations other than a Farmers market required a permit from the State Department of Health but Farmers markets were considered the same as selling from the Farm. The farmer's market in Texas was an extension of the farm. :-) Texas also has Cottage Foods Laws which allowed for the sale of home made goods like breads, jams, butter, and other non-refrigerated items via Farmers Markets with out permits and licenses.
So I guess I can give up on selling surplus eggs at a farmers markets in Oklahoma. I admit that having people pick up eggs from the house is a whole lot easier than sitting at a booth for 4 hours hoping someone will come by. I feel that regulating a Farmers Market into the level of Eggland's reduces the value of these venues though. You are still getting a commercial eggs and the same limited selection that you would find a grocery store. No homemade jellies, no artisian bread, no farm eggs. etc. :-(