I've never seen them in the stores here either.
I get them from the organic CSA farm I'm a member of.
It provides me with all kinds of veggies plus youghurt and meat.
I did that a couple of times. Both times the farmers had bad years, so their output wasn't great. Also, I felt too much pressure to figure out how to use the vegetables while they were still good. So I decided to stick with farmers' markets.
At one of the CSA farms, though, the people raised and sold free-range chickens and fresh eggs. They were a long drive out into the country, though beautiful on a nice day. I would stock up on about six of the chickens. (I mean, at that point the chickens were, er, ready to eat, not still strutting around.)