I know money is the reason.$$$$$$$ is the reason.
We've always had mixed breed dogs, BUT if I were going to get a purebred I would buy from a reputable breeder. They will have pet quality puppies that are healthy, no hip dysplasia, etc. and at a reasonable price.
I would only rescue mixed breeds. And even ethical breeders can have puppies that have hip dysplasia and that arent healthy.