msladybx32, welcome to YorkieTalk! Yorkies are a beautiful breed, but please do NOT buy from petstore! Petstores only sell puppies from puppymills where the parents are kept in deplorable conditions and are only breeding machines. Their health is not cared for and many times they are left in their cages in their own feces and urine. Some never see daylight. If you buy from a petstore, you are keeping these puppymills in business.
Instead, try to find a reputable breeder to purchase a puppy from

Go to the featured yorkies for sale section and try to find a yorkie there. Or even go to the yorkies for sale section...You will be glad that you bought from a reputable breeder. Ask the breeder lots of questions, and they should be interested in where their pups go as well.
Get at least a 1 yr health guarantee against genetic defects. A good breeder cares about where her pups go...