One or two have mentioned the price per flying hour on this thread.
I tried to keep my ATC PPL valid but in 1963 at £6 15s for the Chipmunk and £5 5s for an Auster I just couldn't afford it on my £10 per week shift work wage as a "Scientific Assistant" in the Met. Office ........ and the youngsters of today claim that everything was cheap in our days and totally ignore the fact that it''s all relative to income .....