We have a few pet shops in our area.. If I am in the area I always depress myself and go into the shops..
I have on every occassion ask the shop employee if they have the papers on the yorkies and they say have always shown them to me.. At that time I have been able to see who the breeder was, the state they were breed in and who delivered the puppies to the shop.. I can honestly say I have never seen a pup in a pet shop from a local owner, at least in our area..
I hope that your pup gives you wonderful years of love and companionship, they all deserve loving homes rather coming from pet shops or reputable breedes..
Keep us updated on your puppy and we would love to see pictures!