Dang, I never thought to hunt for a local hatchery. I assumed they did not do walk in business for small orders.
I also found that similar size is more important than the same age, when buying chicks. (Or, keep them separated a good while.) I’ve had bigger breed chicks trample smaller breed chicks of the same age. :-(
I’m lucky. Cackle Hatchery is about 1-1/2 hours for me. Went to Estes Hatchery once many years ago when I lived in Springfield, MO area.
We had the same issue last spring when we bought out current flock of chicks. I ordered 6 Barred Rock and 6 Buff Orpington, but for some reason they had a shortage of the Buffs, so I got them two weeks later. (Farm & Fleet)
So, we had TWO brooders going for them because the ones that were only 2 weeks older would’ve raised holy h#ll with the younger chicks.
Nature as a whole is cut-throat - even in the world of fluffy baby chicks, LOL!