found something
Well its been a while, thought I'd follow up. I joined the group suggested above, and not too much was working out. Finally someone mentioned Fairway. I went there and found backs for $0.49/lb. The first time I went, I was confused cause I didn't really know what to look for and they were called "Chicken bones for soup." But they are backs, occasionally you get some necks and wings in there too. Not the best price that I've heard, but they are Murray's (no antibiotic free-range) and in my opinion its reasonable for a good quality, reliable supply in on the upper west side. They also sell turkey necks, and all other types of raw meaty bones, a bit pricier, but good for variety. Located at 74th and Broadway. No luck with butchers, but I've kind of given up since I've found Fairway. Hope this helps.