We have operated one of those for the last 10 years. Lovely easy aircraft to fly and the running costs are so small they are irrelevant. Ours originally cost a total of about £45k but I would think the market value is about £35k these days which makes a 1/6 share expensive at £8k. Insurance is about £1000 and maintenance costs maybe average £800 pa. It only does about 50 hours per year as only two of us fly it and we both have other aircraft to fly as well. It stands up very well to a really rough old runway and the most frequent problems we have had have been brakes and tyres. Cruises at about 100 mph and always starts instantly whatever the temperature. We do our own normal maintenance but occasionally farm out any big jobs. The exhaust joints crack frequently and have been welded umpteen times. There are three based locally and they have all been excellent. I would buy the same aircraft again without hesitation.
PM me if you want any more info.