I am not disagreeing about listing everything you know. What did not seem to come across in your quote of me (and I am not accusing you of anything, just saying I may not have been as clear typing as what I was thinking), is that if he said a "used plane" and had enough pictures for the buyer to see any issues, and/or disclosed anything he knew (not what, in his mind were issues commented on by others which would affect they price they would pay if they would purchase), it could have still been sold for the price he said. It is up to the buyer to decide how much they will spend for what they see. That is why I was surprised you posted such a deriding comment, simply based on the sold price.
For the record, when I sell something I am meticulous about taking multiple pictures of various angles, and commenting on any condition issues (regardless of how small they may seem). However, when buying, I am not surprised when others do not follow the same (and generally those are when I have found the best deals).
I am not commenting about what, or how much disclosure the OP may (or may not) have put into any listing of things he has/is/is going to sell/sold.