As someone who just bought a TTA last month, I have watched the responses with great anticipation in this thread and felt the need to chime in.
While I am a strong believer in free market economics, I do find that listings of this price nature caused me to TURN AWAY from the TTA market in the past. Why? Because my time is valuable.
I searched for my TTA on and off for years. During the off years, I gave up because I grew tired of dealing with sellers who thought their 17K mile car with a cracked spoiler, worn seat bolster, and sagging headliner was worth $23K. Even after you presented them with sale results indicating that cars in similar condition sold for $17K, they would not budge.
So, I moved on and those cars remained on the market for a long time, which led to an oversaturation in supply. Fortunately, I was able to find a reasonable seller.
But, the car belongs to the seller, and they can list it for whatever they like. If they get it, God bless. However, the best analogy I can use is one in which you live in an exlcusive neighborhood where the homes cost $1 million. However, one owner maintains his home more that usual and lists his home for $3 million. Everyone in the neighborhood wonders why the owner keeps listing it at that price although it does not sell, and to those on the outside looking in on this exlcusve neighborhood, they wonder what is going on.
In business school, I studied this behavioral economic concept known as "endowment effect". It sure does apply to the TTA market.