Welcome to YT. How great that you are researching before you buy! You're moving to Lima - is that Peru or somewhere in the US
Lots of good advice about the variations of yorkies!!
Please, please do not buy from a pet store -99% of those in pet stores come from puppy mills.
There are a lot of good breeders on YT or you could check
Yorkshire Terrier Club of America for some breeders in your area