Well... in MO you need a license to sell eggs at a farmer's market. This costs $5 a year and does involve an annual inspection, requires candling, weighing and labeling your eggs. BUT! - You DON'T need one if people come to your house to buy eggs! Doesn't say anything about meeting people at a...
I am about maxed out in my 8x10 coop. But the other day I lifted up my eyes and behold, on our property there is an enormous old unused workshop you could easily drive a truck into to work on... DH's late dad used to do woodworking in it. With modifications it would easily hold a hundred...
I have donated my surplus eggs to the local Bread Shed, which is run by a local church group. They are tickled to get them. Since there aren't enough eggs for everyone, they let people who want some enter their names into a drawing.