Hi there and Welcome to YT . I know how exciting it is to be looking for a Yorkie puppy
Take your time though. I believe 1,700 is high though. What are you getting for that amount? AKC Reg? Show Dog? Ask these questions, and also request to see the parents and the whole litter. Make sure the breeder is selling at the propper age . Any younger then 12 weeks is not good.