What I discovered at my supermarket, is they get delivery for dairy on only certain days of the week. If you shop on those days, you get stuff. Next time you are at the supermarket, ask them when they get deliveries and shop then.
“...ask them when they get deliveries and shop then.”
I go to the farm market that is one mile further up the road. They have cows, and the half and half is not “ultrapasturized”.