welcome to YT!
IKC is a pet store and not a very good place to get a puppy from. A lot of the puppies are sick with kennel cough and possibly pneumonia. If you are serious about getting a yorkie please look into getting one from a reputable breeder or rescue. There are some great breeders here on YT that are in the area and others that aren't in the area but will ship.
check here:
http://www.yorkietalk.com/forums/forumdisplay.php?f=39
and here:
http://www.yorkietalk.com/forums/forumdisplay.php?f=8
and here:
http://www.yorkietalk.com/forums/forumdisplay.php?f=53
be patient. Do your home work and don't jump on an opportunity just so you'll have him by christmas.