I actually have no idea about the costs, but I wonder if you ever noticed the faces of passengers when a go around is being performed. some years ago the federal office of civil aviation changed the procedures to land in Lugano, since the descent glide was too steep, out of any imagined regulation. after that change the usual aircraft that had been used during years in Lugano (a Saab 2000 aka Jumbolino) was temporarily changed with a Dash something and it happened almost daily that one had to go around, it was becoming a quite normal procedure, even if the approach should have been, in theory, easier. I was seated next to a businessman who was looking out of the window, already ready to get up and rush to the door in the time needed to land and taxi. I heard him saying a "oh no, nonononononononono what the ------ is happening? are we going to crash?", since he did not know what the aircraft was performing. The approach was missed, so the Dash retried it and could finally land. When the taxi stopped and the door opened, he was still sitting, looking blindly in front of him, not daring to get up anymore. and all that for a go around.
