Those pups are well tended. They have all their shots, all microchipped, inpsected top to bottom and eating premium puppy food. I was shocked when I went to buy a bag of it. Besides my sister and the vet she works for are good friends of theirs so rest assured this isn't a puppy mill or my sister wouldn't recommend them and also they wouldn't have sold me one. They're all bred as working dogs for farm or rescue or agility type stuff and not sold to people looking for an Aussie just to have an Aussie. Don't be deceived by that picture, they have access to a huge outside area and other parts, that is when they're not in the house which itself is a doggy heaven. They're all spoiled.
However I also agree with you on the maybe buying from a shelter etc.. We have had shelter dogs, two, in fact my beloved Parker who just passed on (my favorite dog of all) was an abused rescue I got when he was 6 y.o. He magically turned up within a week of the passing of my previous dog. This time on his passing that didn't happen even though I've been looking at shelters and Petfinder for over a month now.