There's a share available in one of our own a/c which is a very nice aeroplane but then with a fleet of five (or four and one static display as I like to call it, in joke) of three a/c types there's never really any problem picking an a/c up, plus I like to jump into a different type, having your own share I suppose makes you want to fly it to the exclusion of everything else. I would have to fly it for three hours a month to break even against renting so being as I do around 5 hours per month on average I suppose it would make financial sense.
I fly from a non profit member run club which is so cheap I daren't even tell you so the cost isn't a great issue. I find it a bit jaw dropping what some people pay to rent a plane or pay per litre of fuel.