I have a friend with a C185 and he says 30,000 a year for about 100 hours of flying. (total costs). Is that reasonable? Seems a lot to me. The other 'problem' is convincing 'she who must be obeyed', "havn't you had enough of flying?"...........etc. Then worse, is having to deal with the Dept of changing names.
Not really outrageous if he's paying for hangarage at a major airport.
My Auster costs about $10,000 per year for approx 50 hours but I get free hangarage.
So it costs me approx $200 per hour, but that's without inclusion of engine overhaul (due) and props etc.
I haven't added those in for fear of what they represent but it would probably add another $20 per hour.