I don't know, I have no problem with returning the pup right off as it has a show fault, and is not going to get better according to the vet, and the dog was purchased as a show dog.
But, there are so many things that might make a puppy not suitable for the show ring as it matures. I would think one buys any show dog with the understanding that they may not turn out, and have a plan for them if that is the case.
Heidi Ho, Odie
Joy-Joy, Bear Cub, Hepsi-Pepsi
Cujo2, Karma Chameleon
Ramona the Pest, Kojak -- who loves you baby?
Tiny Tinnie, Susie's Uzzi, Kaiah -- The Baby Monster.