This thread has moved on, and it doesn't really matter, but it's Sunday and I'm avoiding doing anything more useful ...
You don't want them to own both parents, that suggests they have not actively sought out a good stud and they are just breeding their own pets as an easy money spinner from home.
People are very simplistic on these threads, but buying a puppy is a very difficult thing. There really is no 'one answer fits all', you have to look at the whole scenario. Yes, if someone has two overweight chocolate Labradors in their front room, or a Poodle male with various other bitches running around producing crossbred litters, they are just breeding for cash. On that basis, it's often true to say that having both parents is a bad sign, but also often in the case of truly dedicated breeders this is very far from the case.
Just because the dog is in their home, doesn't mean they haven't bought in, imported for new bloodlines, bought in a bitch to match the best Champion bitch they've ever bred ... I have two males here, one from France, one from Germany - much expense and many many many miles spent looking at relatives, seeing puppies at 'selection age' and then back again to collect them when they are old enough to travel. Expensive health tests on top when they are the correct age too, of course. Nothing easy or cheap about it.
It is so complicated. As ever, a breeder who can demonstrate years of experience, true dedication to their breed, accurate health tests and generations of healthy dogs to see is the best bet in my book.