Go to a reputable rescue. They will have many Yorkies of all ages and sizes. You can get information about their personalities and health.
If you do decide to buy a Yorkie - do not take one without a bile acid test.
Yorkies are prone to livershunt and the puppy will die. Don't bother asking the breeders. They can lie and say they never heard of it. Don't buy without the bile acid test.
But do go to
Welcome to Save A Yorkie Rescue, Inc. and see the dogs available before you decide. Thank you.