Well, for one, "PR" has nothing to do with Champion dogs in a pedigree like they are trying to state. "PR" means absolutely nothing more than 6 (maybe 7?) generations of dogs in the pedigree have been registered with the UKC. So all it means is that for 6/7 generations of the pup's life, people have been willing to fork over money to a registry to send them "papers" on a dog. That's it. Nothing more.
Those dogs are nothing more than your typcial byb specials with ignorant owners trying to sound edumacated.