(I'm following the trend of registering an anonymous account...)
I've been working in software development for 10 years, and earn R800k pa, which after tax is R50k pm. Then I pay R10k to RA (that's 15%), almost R5k to medical aid (family of 3), and R15k for the bond - we live in an average 3 bedr house in a security estate - essential in SA if you can afford it. So already down to R20k.
Water, electricity, municipal rates and estate levies - R3500
Insurance (incl life) - R2000
Creche fees - R2500
Cars paid off, but fuel and tolls (both drive a fair distance to work) - R4000pm
Internet, telephone and cellular - R2000pm
Domestic and gardener - R2000pm
Then a variety of other monthly subs (kid activities, ipad, etc) - R1000pm
Which leaves me about R3k pm. Fortunately my wife netts about R12k pm, which means we can cover the monthly living expenses (food, eating out breakfast or lunch or supper once a week, household consumables, birthday presents, etc.) of realistically R12k pm, and still have a little breathing room.
I'm under no illusions, we are very well off, but money is still tight. Every now and then you need to service the car, buy new tires, replace some household appliance, and these things cost money. Nevermind saving for a new car...