I had posted my feelings, then realized that the inferences already made in this thread are enough for me to say that whether someone is selling or rehoming a dog and under what terms and for how much is really no one's business unless they are involved with the dog or the situation. Attempting to discuss it on a forum like this will probably not end well!
I didn't see any judgements or inferences in this thread. I see the reality of what does happen. In any sport, there are "throw aways", or people that view them as such. That does not mean everyone in the sport views the animals as such but it does happen often enough to cause issues.
I don't think anyone can deny that there are people in dog sports and horse sports that view the animals as nothing but a title and if they can't do that have no value.