A min pin is a Miniature Pinscher..
Most of my dogs in my life came from BYBs and Puppymills. I've seen the problems they can have and how sometiems it affects them at old age and some at young. My old GSD, Hannah, was put down due to aggression, turns out her WHOLE litter including her mother, was also put down due to aggression. My other GSD, Simon, was pretty aggressive as well. But he was also very family oriented unlike Hannah and we could control him. He also had bad hip problems in his old age as GSDs are prone to Hip Dysplasia I believe.
My old poodle, Alex, he is terrified of everything due to lack of socialization as a puppy. Takes him a very long time to get used to something otherwise he's pretty much scared of everything. His new owner now, says he just enjoys being in the house all the time. I have more but no time to talk about them.
BYBs shouldn't exist and I think it's rediculous when people are breeding for the "extra buck". If you can't afford the animals it's about time you start thinking about maybe rehoming a few, you shouldn't take in more if you can't handle them all.