The whole cost ?
As usual a mixed bunch of replys all with claims of cheap flying and all in the £50-60 bracket however these mostly downplay the additional costs of monthly subscriptions, ownnership costs, airline tickets & hotels etc and I doubt if anyone has made an allowance for landing and parking fees.
The time recording of some of these aircraft is likely to be on the "Hobbs" so the clock starts ticking from the moment that you turn on the master switch and some of them will charge you home base landing fees so a little research is needed to get to the "real" cost of these aircraft.
I can show you how to hours build for around £73 per hour in the logbook the cost can be reduced by around £9/hour for flights to europe and all this from an airfield on your doorstep!
Check your PM's for more.