Not the sellers job to educate the buyer in conformation of horses. Buyer coming thinks they know enough or they bring another knowledgeable person with them.
We seldom sell a horse, but it is always a PITA. We are clear in the advertisements, which no one reads anyway. Video is clear, shows everything horse can do. We still get the tire kickers calling, coming out to ride it, asking basic questions covered in the ad or video.
I can usually tell the knowing from the beginners now, weeding them out in phone calls. Those who come get intimidated right off with horse size, things often do not progress further. I TOLD them he was 17h, guess they never truly saw a real 17h horse! This was even though BIG was what they wanted when they called. Riding may or may not happen as I let them saddle and bridle horse themselves. If they want to own him, they need to see how he behaves, reacts, if they can manage him at their house. I tell them how we do things so they can do what horse is used to happening in preparing to ride.
Then if they do get on, I have to correct rein hold from REALLY tight, to just basic contact. Horse is not trying to run with them! That is his natural big walk!! We like big movers, though it seems to scare other folks. I may stop things there, tell them to get off, we are done. I stopped one rider over fences, she jerked him as he was taking off. He did manage to get over clean but she fell off. She got on again and I warned her about the jerking, she caused the problem! But she jerked again, he landed poorly, stumbled, she went off again!. They were not upset, evidently she falls off a lot. I said we were done riding, she was untraining him. They called back! Said they were sorry, but watching the video, it was not her fault, horse acted poorly so they did not wish to buy him. I was right beside the jumps, SAW her jerk the reins, using them to stay in the saddle. I gritted my teeth to not say “I wouldn’t sell him to you now anyway!” Found out later she had 3 horses at home she could not compete because she had made them confirmed stoppers. They would not jump anything now. Had all been good jumpers, nice x-country rides for anyone, before she bought them. I am not going to sell my horse to some ignorant, unskilled rider, he doesn’t deserve that fate. We keep on advertising, eventually a real horseperson will come along and buy him. Just might take a longer time. For us, it seems there is only one buyer for that horse. They click. Buyer and seller are both happy when he goes to a nice place. They call us back over the years to share his adventures! How much fun they have owning him. Always glad to hear that.
But from a seller side, buyers do not believe what you tell them and as a buyer, I seldom believe the seller! We have been flat-out lied to, along with a number of minor deceptions on behaviour, training, attitude. One we were able to return because we told seller if they did not take her she would be sold for meat! Had great video of being used, a few years back, then sitting at the breeders since. However she was crazy at our Trainers, just tied to the wall of arena. Afraid of everything getting near her, double barrel kicking reactions still after 2 weeks. Trainer said she is not worth the effort. Another horse seemed great, owner answered all our questions correctly. Husband flew across the country to see it. What a mess! So many wrong things I can’t list them all. Vet called out for PPE remarked to owner that the healed eye surgery looked good! One of our specific questions was had horse ever had eye problems!! Then she would not return deposit for failing Vet check, so husband had to go to police to get it returned! Not leaving without it, she would never refund it by mail. Yeah, the police knew her name and address, no trouble to drive out there to help collect our money.