I know how it is trying to find a beautiful, healthy Yorkie! Be sure it is from a reputable breeder. i'd try looking for a breeder through the AKC website. And from one you can drive to and see. Meet the breeder and the parents of the pups. THen it is important to have a health gaurentee. Puppies are going to be more expensive when they have papers, been gentic tested, vaccines, contracted, and from a reputable breeder. Your better off saving the money and waiting.
You could also look in the Washington area. I would not settle for less, because it could end up into a heartbreaking choice later down the road. In my opnion I would not have A Yorkie baby shipped. It would be best to fly over yourself and then pick the baby up.