Just putting in my two cents here. I lived in Mexico while I went to school. I spoke with this breeder on two seperate occasions, about 3 years apart. The first time I spoke with him, he was very rude. I told him my budget was about $1000, and he told me flat out that I should just save my money and buy a cheaper breed because I was not going to get a good quality Yorkie at that price. He was also very snobbish, telling me he was the only person importing Yorkies into Mexico. I thanked him for his time and ended the conversation.
Fast forward several years later and I spoke with another well known breeder who told me he had been going through a divorce at that time and it was not a good time to contact him then. So I decided to try him again.
This time, he sent me photos of a puppy and then was pressuring me on the phone to hurry up and decide within a few minutes of getting the pictures, because a celebrity wanted the puppy. I called him later and told him I did want the puppy, but they then the celebrity had alreayd bought it. So then he sends me photos for two other 12 week old puppies he had availabe. On the phone he told me that all his sending me photos and speaking to me on the phone better amount to something. Basically he was saying I needed to buy a dog from him, since he was "wasting" his time talking to me. The photos he sent me were of 4 week old puppies. I may not be a breeder, but I do know what 12 week old puppy is supposed to look like. There were way younger than that. Needless to say, I didn't call him back.
He was also willing to cut off the tail of a 12 week old puppy. According to him, he would take the baby to the vet and they would just snip it off then and there without anesthesia!
If he wasn't willing to spend a few minutes talking to me on the phone, as a potential buyer, I doubt he'll be a good mentor to someone who wants to get involved in the breeding world. I would run away from this person. And I too heard from a well known breeder that some of the dogs he was sending into the U.S. to new breeders were turning out to not be the best quality babies. Just wanted to share my own experience with this man.