artificial insemination, 99% of the births are caesarian, relatively small litters... for the most part, you're hopefully paying for a responsible breeder...
typically the high price tag is just the start too.. i'm sure Chrispy can attest to some of the health probs they're prone to.. even though he's not good with the heat, snores louder than Ted & The Gadget, and is more subborn than my mother in law, i'll never own another breed..