I was reading through this thread and I felt I had to post something. I am one of the YT members that purchased a puppy from Betty (tortoisekeeper). I got puppy #3 (now Sophie Belle) and was the first person to pick up one of the puppies. Sophie did get a little car sick but that didn't worry me as I did my research about car sickness. We took her to the vet for a check up within a few days after getting her and our vet said she is a perfectly healthy puppy. She doesn't have worms, didn't and doesn't have fleas, and she is one of the most playful puppies I have seen. We've not had any problems with Sophie or with her "grandmommy", Betty. She does itch sometimes (mostly when it's getting closer to "bath day" and when she has her harness on) and the vet said that can be normal and he didn't see any fleas, flea dirt, or insect bites on her and told me not to worry about it too much unless I began to think it was excessive. He also mentioned that itching can be caused by anything that is on the floor--cleaning products, cat hair (which we have since we have 3 cats), etc. We try to keep our floor as clean as possible since the cats shed a lot, but of course, we can't get it all up all the time, so I'm sure that if she gets a couple of stray cat hairs on her she itches, just as I do if I get them on me.
As far as the price, the price we purchased Sophie for is pretty close to what anyone around here would pay. I know that prices for yorkies are different in every region, and in many places in TN, they are much lower. Our vet is also cheaper than others, too. Her check up only cost me about $50 (with puppy kit) if I'm remembering correctly. He has toy dogs himself and his practices deals with lots of small dogs and cats. He is an excellent vet, but he can be cheaper since he makes most of his money working with livestock (we live in a big farming area). He also said it was fine that she was vaccinated by the owner, too.
I just felt I had to say something as one of the other members who has one of Betty's puppies. Our Sophie is doing great (we've had her since 7/25) and Betty and I have corresponded several times including talking about vet visits, vaccinations, etc. and she has been very nice and cordial.
I am sorry that the OP has had problems with her puppy, but this could have happened with a puppy that you paid $1000 for and got from a professional breeder, too. I saw Betty's 3 adult yorkies and they were healthy happy dogs, too. IMHO, she takes care of her dogs and loves them very much. Just my 2 cents worth since I own one of her puppies as well.
Here are a couple of recent pics of Sophie and you can see she's doing great.