I don't ever think about any amount of money being made from any dog, purebred or mix. All that matters to me is that they are being bred to improve the breed.
NO ONE should EVER breed a mutt on purpose, nor should they breed any dog who is not completely healthy & meets the breeds standards.
I strongly dislike anyone who breeds just for the profit. There is no reason to as there are so many dogs in the shelters. Beautiful dogs that would make awesome pets are being put to sleep every day because there is simply not enough homes for them.