We have a lot of yorkies out here that are AKC registered, but don't meet the standard size wise. They are still great pets. For example, I got Tucker for only $500, AKC registered and no limitations on breeding rights or anything. He is one year old now and 9.5 lbs. I love him!!
It might be nice to have a smaller one for portability and travel, but I love Tucker the way he is. He is so much less maintenance as far as worrying about having to feed him every few hours, fragility, etc. He is a hardy little guy who loves to play and run. I think if he was any smaller and had the same feisty personality he wouldn't survive LOL!
You can get yorkies here with CH. bloodlines for over $1000. I have yet to find a breeder here that shows her dogs, , though. Pretty much they are all breeding for good pets, not show dogs, around here.