Yikes!
I have been raising Boston Terriers for ove 20 years and am a proud member and the webmaster of the Boston Terrier Club Of America.
I did not see ONE breeder that was breeding puppies to improve the breed or preserve it. ONLY people out to make a buck ! Soooo sad! None of these breeders guarentee their puppies to be free of genetic diseases or problems and I have personally heard horror stories about three of these breeders from people who purchased a puppy from them.
Be warned people. these so called breeders will not and some I know for a fact, do NOT stand behind the health and welfare of their puppies except in some cases to take them back if they are found to have parvo within the first 10 days of you taking them home, even then some have refused to take the puppies back OR help with medical bills, their sales are final because they do not care about the puppies only their pocket book.

Learn how to recogonise a reputable breeder....