Traditional Food Buying Clubs

So I recently discovered The Traditional Foods Club, which is a supply group for traditionally prepared foods in the Greater New York City area. I have not joined as of yet because I can't find out if they are any different than my CSA, through which I can purchase grass fed meat, eggs, chicken, turkey, jams, jellies, flour, you name it, they have it (except dairy). From my CSA, I can pick up my ordered goods once a month from a woman's apartment who lives nearby. You have to join the TFC in order to view their prices. Joining is not terribly expensive, it is only $20 a year of you agree to volunteer 5 hours of your time. And the TFC has pastured butter and dairy.

So I thought I would open it up to you guys today. Do any of you guys have experience with this or other buying clubs? How do they work? What are the benefits? What are the downfalls? Is it even possible to find their products through other channels of distribution? Should I join? Please please comment!!