. I drive an old car, but it a sacrificae I am willing to make, to make the numbers work...Now onto the numbeers
At Feb 2008.... R550/hr all in..... Now would be slightly more due to fuel price. In 2005 the total cost per hr (actual) was R342.19, but since then the AP's have dried up, the AVGAS price has gone west and CAA are forcing us to maintain NTCA better than TCA... Today I would guestimate around R650/hr, but I do 200+ hrs a year so that "helps" with reducing hrly cost. That said it still well over a R100K a year
on local travel. This does however compare very favourably with the cost of driving the roughly 70'000km (6000km a month) I used to do - The speeding fines are significantly less (on 1 trip I got R4500 worth of fines 
Did not see 3 new 80km zones on highway next to squatter camp and 2 4 talking on fone after bluetooth headset went phlattt) and I have not had to replace a single tyre (R2'200 A POP)due to hitting pot holes - . Obviously the more hrs a year you do the "cheaper" per hr it gets, but the more cash you have to outlay - hope that makes cents...
.Something like this...
Direct operating costs per hr.
Fuel and oil (R11.50l and 33l/hr) - R386.25. (I still have 1000l at this price so should see me through to Dec/Jan, then will increase again {sigh}) Engine and prop (based on 2000hr TBO) R152.94. Fixed costs (Hangar, insurance etc) R123.00. Running costs/hr R662.19.Again this based on 200hrs a year. At 50hrs it goes to over R1000/hr, but still well worth it IMHO....
As I said above IT DOES NOT INCLUDE CAPEX COSTS (finance) as these are "recouped" via depreciation and are considered business expenses same way as say a company delivery vehicle... The capital cost will be recouped (in theory) when the asset is sold... There is a huge tax benefit if you have taxable income, but be warned as mentioned by Sly it is simply a timing difference. SARS will get their share one day.... How long you delay it is another story
. If I had to add in the cost of the aerie at 15.5% over 60 months it would increase by R721.60 per hr, and thus all in cost per hr is around R1'383.79. Say R1400, which is only slightly more than the fuel cost x 3 which many use as a rule of thumb.... (R4.44 a km which is on the high side, but compare it to an R800K car costs and it suddenly not that high - only difference is I would not buy a R800K car easily
)This is my company car...
It does 170kts all day long (180+ when I am in a hurry see below), which is roughly 315km/h. This equates to roughly 9.45km/l, which is better than my car gives. Also remember a plane flies straight line (if pilot not pissed) and thus distance FAGM to FAVB for eg is 350km vs 415 by road.... Also time and stress saving (you could justify it all day long with list as long as you like - I have pages and pages). The plane effectively gives me 1 extra days a week which I used to spend in the car... That 4/5 days or almost 1 "extra" week a month. Before we got busy on development front, it alone justified keeping my consulting business open which paid for all the flying.....
BACK TO REALITY - IT NOT A MICROLIGHT, BUT THIS WAS NOT FAR BEHIND AND IT IS A MICROLIGHT... (Not as fast but cheaper to operate)
I have done plenty hrs on J400 series which are also not ML's but this has same engine. I would argue that possibly the J250 (the 4 seater with only 2 seats and beeeeg baggage) would be a very practical SPL/RPL xcountry tourer....
When I am in a hurry...
PS
Apologies for hijack. It not a microlight per se, but I do believe there are some very capable microlight class aeries and principals would remain the same. Happy to answer any questions anyone may have regarding the viability of operating an aircraft for business purposes. I been doing it for 3 years now and my old man has been doing it since 1969, legally and "successfully". I say "successfully" as it still costs huge bucks...
but so does driving your 5 series or X5 the distances I used to.... 
