For my permit aircraft I pay £850 pa insurance (inc hull cover), £1150 pa for hangarage and £500pa on maintainence and inspections. So my fixed annual overheads are £2500. I then pay £30ph for fuel. I don't have an engine fund as I have a spare engine which I am slowly rebuilding.
At the moment I fly 70 hous pa which works out at £65 per hour. An upcoming change in work commitments will mean I'll easy be able to fly 100hours pa, reducing my costs to £55 per hour and if I can manage 150 hours p.a (I will be hours building for a CPL) it will cost me £47 per hour!
My aircraft is a Jodel 150a Mascaret, 2 seater.
Buy the right aircraft and you shouldn't lose any money on the capital when it comes to resell. It is a buyers market, grab yourself a bargain and sit on it until someone is willing to pay you good money to part with it and use the profits subsidise your flying.
The best thing about single ownership is availability, being able to turn up at the airfield and going flying whenever there is the slightest gap in the weather and being able to take the aircraft away touring for as long as you want!