I've been ok selling to friends and neighbors, and a few coworkers, but I live on a busier road, so I am planning on just putting a sign up in my front yard when I have extra eggs. That's what a former neighbor did, and they said they sold out really fast when they had them.
I've sold one chick, and it sold in a couple hours after posting it, and it was a backyard mix. I think I could sell chicks fairly readily, if they are good producing breeds. I'm going to see if I can sell some meat cross chicks this spring. Cross between dual purpose hens and a dark cornish rooster.