
It is impossible for anyone to sell a pup as a "certain Champion". No honest breeder would make such a claim as so many things can change as a puppy matures. All you can do is research the pedigrees, make an educated guess as to which lines to go for (reading show results etc) and hope for the best! I also think it would be very unlikely that anyone will sell a Champion - most showdogs in the UK at least are family pets, and only show in their 'spare time'.
Good luck though.
:)