there is a yorkies for sale/wanted section in this forum, maybe post in there and see what responses you get? this is a great community to find pups in when you ask others for feedback they let you know if the breeder you are working with is reputable & share their own experiences.
i think the prices seem to be around the 1000-1500 mark for a akc/ckc (ckc I mean, the canadian club) registered yorkie.
generally, the breed standard is not to exceed 7 pounds. both of mine are in the 4-5 pound range and they sure seem tiny, especially compared to my cats!
best of luck in your search
