One thing that concerns me (about disease) is that I don't know who touches the birds at Nature Berry, and I know at TSC they say no one is allowed to. I read in the chicken book new hatched birds usually do not have diseases, but then as they get older and get handled more things can spread? I didn't think about that. Stuff to think about. We had been thinking of getting older chicks, now I am not so sure. I am a huge softy and it's gonna' hurt if any of these chickens die. This is way more complicated than I had imagined!!!
That's a very smart approach. You can always ask them about it. If I were to get started birds there, I'd also personally ask how they deal with returns. That is a bio-seccurity risk if not handled correctly. I think you are approaching this with a lot of thought going into it, which is a great thing!! I found myself way more attached to my birds than I ever anticipated, so I know how you feel.