You can get a cross like Tucker in rescue (you can see Tucker's eyes are the wrong color for a purebred Korat and he has a locket, which is also not allowed in show)and many of these cats have the personality of the breed they resemble. Most of the breeders I know will let a pet go for anywheres from $400 to $600, depending on age, and which breed you choose. I too have a domestic who appears to be a Russian Blue cross - he has the green eyes and proper shaped face and is a small boned cat. Judges have seen both Donna's Tucker and my Karma and have said the same - they strongly resemble their respective breed. So it really depends on what you want - if you want to show, then by all means go to a breeder - if you want a purebred but don't care if it is a kitten or showable, go to the individual breed rescue and if you don't care if it is completely purebred, check out the general rescues.