Ok, here's my opinion although it may not be the answer you were looking for. I personally believe that there are way too many puppies in this world that need homes for someone to be breeding mixes and selling them for over $1000. I think that it's rediculous for someone to be running there business by mixing breeds of dogs, when the purpose for breeding more animals should be for the betterment of the breed. I believe this woman is just breeding whatever she has sitting around and selling them for a huge profit.
Grrrrr...that makes me furious. If you want to breed, breed for the betterment of the breed, such as removing congenital defects from your lines/specific breed etc, not just for the money!!!