In that case, my own experience would not help you (day-old chicks), but hopefully someone else will be able to share.
Best wishes for happy chicken-keeping in this new year!
Are you looking for day-old sexed chicks?
Or for started pullets, old enough that they no longer need a heat source?
Or for point-of-lay pullets, grown up and almost ready to lay eggs?
I only have experience with day-old chicks, not older ages.