jmtui-
You should definitely be wary of where you purchase your dog. If you've never owned a Yorkie before and would feel more comfortable dealing directly with a breeder, I'd suggest going to the Yorkshire Terrier Club of America. They have a list of "approved" breeders that you can contact and speak with about available puppies, upcoming litters, etc. Most are very friendly and helpful and you certainly won't go wrong making some calls and speaking to folks!
One thing I can say about Quality Canines, they do give you info on the breeders and you can contact them if you'd like to...
Best of luck!
Mojito & Irmi |