There are two fairly local dairies that use them. One is organic the other isn’t but is Kosher, has Jersey cows and doesn’t homogenize. I buy the Jersey milk.
I don’t know if you or @gtaus are old enough to remember the soda pop trucks carrying full bottles to the stores and emptied ones back but I sure do! They made the most enchanting sound clanking around. Or so I thought haha! Refillable could be huge, so much of that stuff is plastic bottles...