Caution about running costs and you'll love it. Do Research 1st!
I would say it will vary considerably, not only taking into account the area your in but the condition of the car and model year, its a bit of a lottery really and it really isn't the labour rate thats the main problem, its the part prices!
Q. Have all the service updates/bulletins been done such as software updates on the f1 gearbox (which considerably reduced clutch wear)?
Q. What about the engine vernier pullies replaced (which stopped engine failure!!).
etc. etc. Many of these things where done quietly without fuss by Ferrari main dealer service buletins but probably have not been done by all the specialists out there. (I'm sure some do but certainly not all of them even know of the problems) which can mean a less reliable car.
Also since there where considerable and constant model updates over the production life I would argue 360's from 2002 onwards are the most reliable. Even things like the first cars having engine bay covers that didnt have rain channel guides in them, result, steamed up rear windows for the first 30 minutes in cold weather (not great for visibility) especially if you didnt have the challenge grille. Etc.
I have seen some cars where the services have cost a modest approx £1,000 (minor service) and them some real bleepers where the cars driven into dealers with what appeared to be a minor clutch problem and handling feeling a 'little bit fluffy'...
Results; they've replaced the clutch plate, the thrust bearings, etc. then realized the brake discs/pads needed doing and discovered the rear tyres where worn and the front ball joints/bushes worn resulting in knocking during cornering requiring full alignment after fitting new parts.
Total price for the service, in excess of 7K!
You really must be realistic about these cars, just because they are half the new price now the servicing costs havent dropped that much. You must reserve at least a few thousand as a contingency over the purchase price to put right all the little niggles that are highly likely to rear their head.
Parts are still pricey, even silly things like a broken seat winder nob (just a piece of silly plastic!), yours for £60. An original front bumper £2,000, A windscreen, a cool £2,000. Rear window glass, £2,000. Front headlight, in excess of £1,000. Replacement Engine 2nd hand supplier (no box) will set you back approx £10,000... Engines used 10 litres of very expensive oil, just oil alone is over £100 and typicallly gets replaced every few thousand miles.
Wonderful cars and I really do not mean to put you off in any way at all just be realistic about how much you can run one on. I.e. not a shoe string. Realistically if you cannot afford to run 2 cars you probably cannot afford to own one - insurance for restricted mileage policies can be VERY cheap if your over 25 with full NCB and use it as a wekend car...
Good luck!
Trev