Waste not, want not with two options for making broth. These items are sold per unit not by the pound.
Soup Chicken: whole hens traditionally used for making amazing broth and has chicken meat on it as well that needs to simmer. 
Chicken Backs: typically used for making large batches of soup stock, these 3.5 lb average bags have 5-6 chicken backs and can be separated for smaller batches.
Hormone & additive free, cage free birds raised on Baffoni's Chicken Farm, Johnston Ri.