Lorraine gave you good advise. Also, try going to the breeder referral on the YTCA website.
Yorkshire Terrier Club of America About The Club. You can find reputable breeders in your area who might send you in the right direction if they don't have something. If you are looking for a companion dog, don't expect to get one without a spay or neuter contract. Respected, reputable breeders just do not sell on an open registration unless they are placing a show prospect with a show contract. As for price, these breeders are generally no more expensive than the money grubbing back yard breeders and puppy mills. Good, healthy Yorkies are not inexpensive, but well worth the cost. Good luck in your search.