There are some farms around here that seem to be doing well, staying in business for years anyway.
http://whoonew.com/2013/05/grow-local/
http://www.windydrumlins.com/?page_id=75
I made a little IBC "test" system with crayfish, strawberries, and citrus trees to try out some ideas... but it ended up being in the way (and the crayfish all killed each other) so rather than re-stock it, I took it down.