I don't think you can put a price on love. A pup is like clay its up to you want the final product becomes. If you mold with love that is what you'll get
As far as yorkie prices...to me it really depends...you can get a awesome healthy pup for not that much and then pay thousands for another that is sick. In California I have seen it all. I looked for a long time for a pup and believe me I saw it all. $4000 dogs that weren't even registered. I admit on my search I turned a few backyard breeders in because of conditions. When I found my breeder I just knew and didn't care. I would rather pay a lot from a breeder that tests their dogs and are doing what they should be then pay it later in a pup that will be sick. Again not saying an expensive dog means no sickness...it just depends on the research you do.