People get caught up in the what it is worth to me vs. what it is worth to others/market can bear......the latter of the two will usually see success, the first, not so much......
I was just talking to a friend who is selling a used vehicle, they are stuck on 27K mark for it, dealer offered 23K when they bought their new one......stupid thing is they would have saved almost 3K in taxes on the trade in......lol.