Neither one of my dogs came from a reputable, ethical breeder.
My mix came from a pet store that was selling her on consignment for $25. She was 5 weeks old when we got her. Her "breeder" was probably a farmer that was too cheap or lazy to spay his female but at least had the decency not to drown the puppies.
My Shih Tzu came from to me indirectly from a puppymill. She was sold to her first owner at 4 weeks. I got her at 5 months when her first owner gave up on housebreaking.