foxmoth
The robin that i run i think breaks even because i would not be able to hire a club robin as well equiped and so would have to hire something more expencive to have a genuine airways equiped aircraft.
It is also an engineers toy so the maintenance costs are low.
Keeping control of your costs is what it is all about this is why i can rent out a Cessna 152 at £48/hr wet make money as long as the thing flys over 300 hours a year.