[Zanders' mom]

I wish you much luck in your search, be very careful. I'd go with someone in your area so you can see, the parents, the conditions, etc. Find out what other dogs they breed, I've read on YT that a female can get pregnant by more than one dog.
The picture of the 3 in one mug looks sad to me, because the seller was probably trying to make them look tiny not so much caring of the babies little legs all crunched up in the mug. Then the other older yorkie by itself looks cute but to me the nails look a bit overgrown which would indicate to me that perhaps there is not the meticulous grooming care for the pup?

Good luck.