@ Luc:
Its a fairly big market, I'll post the link as it might be easier to get a hold of them that way. Prices are not that off from the grocery stores in the area.
http://www.nonesuchfarms.com/index.htm
You might be able to even buy a quarter beef for a good discount if you have freezer space. If they don't have something to suit for needs, there are tons of small producers in eastern PA near NJ that maybe able to serve you. Quite a bit of stuff in NJ as well. A nigerian friend of mine goes out to a farm near Easton to buy fresh goat, and another guy I know gets lambs from a sm local farm near Somerville, NJ. Typically those places you buy a whole or partial animal and save it in the freezer. Not as convient as buying a lb of burger from the local Stop and Shop, but is often of much higher quality and can be quite a bit cheaper in bulk. That was the only way my cousin sold his beef.