Raider,
I had a dogo with health and working(catch dog) guarantee for 300 bucks. Breeder said don't even send me the money until the dog is a year or two old so that you can determine if he will work out. That is someone who is interested in the breed not the money. You will never see his dogs advertised and if they don't work out they darn sure won't have the opportunity to reproduce.
I agree with everything you said and my hat is off to a breeder like that, would you agree there are not alot of guys out there like that? Unfortunately!