WHBM - fortunately I was not being trafficked as a child labourer, being only 12, so I know not the wage rates at the time. My fare was paid by my step-fathers employer; way back then many expatriot workers were allowed to bring their children out for the summer holidays one summer between their home leave every three years.
But Dairyground's information seems to say "reasonable", and almost certainly less expensive than the equivalent boat fare - also quicker!