Let's say person is moving homes and has lots of kids toys, suits, shirts, ties and other stuff that he seldom uses.
He is am planning to sell it all in a car boot sale even if he knows that it's counter productive. He would have to use ~30£ on entry fees and fuel, without even accounting for Sunday lost.
Logical solution would be just drive to the nearest skip or charity shop, and yet he can't make himself to do it, which of cognitive bias is at play here?
I don't think this is 'sunk cost' because he is loosing that stuff anyway, it's just that loosing it and knowing that someone else will be able to use it somehow makes ones loss more acceptable, which is sub-optimal and suggests a bias.