On the other hand, buying from local folks (and I sell birds too!) can bring in diseases that never go away, like Marek's disease, or something like Mycoplasma gallisepticum, that requires flock depopulation to eliminate. I'd be incredibly careful about local birds; paranoia about biosecurity is a good thing!
I've really liked my birds from Cackle, and have about thirty of them this year! Many will move elsewhere (local sales!) but some are staying.
As aart said, having three, or six, or eight birds is hard, become some early deaths are going to happen, and with one of each breed, there's nobody to compare with. 'Chicken math' can be a very good thing!
Mary