When I was looking for my first horse, I wanted a supposed childbroke horse. I'm not unwilling to pay for it, but what I discovered was people put that on their ads and then you get there and the horse is nowhere near that. If people were more willing to list a horses faults so that the person could make their minds up with all the information then paying a fair price wouldn't be so hard.
I have so many people call about my gelding and they always want to know if a beginner or younger child could ride, I always say no. It's not because he isn't well mannered or trained it's because it will take a lot more miles before he can attain that been there done that status. I'm not going to raise his price as he ages and gets more experienced, he is what he is a horse. He isn't registered, I didn't pay a lot for him, he is a gelding for a reason. When he leaves my home I want him to go to a home that can get a lot enjoyment out of him. I'd be feeding him regardless so don't see why food bill is added in there.
When people start talking about making money off horses I always get a little twitchy, there is no real money to be made by the average horse person.
This is just my opinion.