Hello and WELCOME to the forum!
Our policy here is to be careful of "certain" pet store dogs. How does one know that they are not puppy mill or BYB (Backyard breeders)?
For example, in our city, we have a "certain" pet store that sells small breeds and they are REALLY expensive dogs! But, people will get papers and be able to get to know the breeder before a purchase.
I would do some very deep research and ask to talk to the breeder.....and visit.......before I would purchase.
Have you researched breeders in your area? I think this would be the best approach..........find a reputable breeder.