My own two cents on this one...
I'm in the market for a new yorkie also... here's what gets me:
"Very small yorkies, no more than 3 lbs grown: $2000. Also standard yorkie about 6 lbs grown $500."
Those type adds make me want to go smack the breeders around. I'm not really a breeder at this point - though I'm open to the possibility in the future and am looking for a decent breeder in my new pup if we choose to take that route. But in looking for my new pup, I'm wondering why I'd pay four times the price for a dog that's way off the standards, very small, and is more prone to health problems?
I guess I could win in this situation since I'm looking for a "real" yorkie, not a "small yorkie" and those aren't priced quite as high. But still, it makes me think those people have no idea about yorkies and are actually going to give yorkies a bad name when people spend 1500 on the littlest pup only to have thousands of dollars in vet bills and eventually a dead dog

What are they going to remember? Yorkie's are too expensive, too much trouble, and too sick.
I'm staying away from those. Far away.