Where do you live? Case in point to what @rosemarythyme said, in two weeks I'll have extra chicks hatching I don't want and will be selling really cheap.
I agree with not going back to that place again. What on earth does he mean by saying this to you?
"The feed store owner pointed out I was picking the “wrong” ones. The only one thriving is the one he grabbed."
So he's admitting he's got chicks that won't survive in this bin? Crazy!