Well, if you can keep a roo (you have the space, and dont mind some crowing) you can replinish your own flock for free by letting the roo mate with your hens. Not to mention that a roo is the protector of the flock, and will give up his on life defending the flock from a predator etc. In fact a good way to tell roos from hens when they are young is to throw something over the flocks heads (stick, fresbie, football, etc) the roos will look straight up to see what the threat is, the hens will either run or squat and hold their heads down.
Just dont try to keep several mature roos, they will fight....to the death in some casses.
Just dont try to keep several mature roos, they will fight....to the death in some casses.