Don't you guys get a monthly balance of your expenses? I do, and I did before too when I lived in another building. It's pretty useful, it has all the details, how much our portero makes (2000 pesos), how much was spent fixing this and that, with full details down to "had to remove tiles around the sink pipe to fix a broken blah blah blah".
Anyway I pay around 110 pesos, it's a 2 ambientes apartment in barrio norte (arenales y azcuenaga) with 2 not too old elevators, no parking lot. The building is in good shape, the doorman takes out the garbage and I guess he does cleaning but I almost never see him. The good thing is there are 62 apartments in this building (10 floors!) that's why my expensas are even below 100 pesos sometimes.
I really can't believe some people are spending more than 700 pesos in expensas, it's just insane unless you have a super luxury building with talking elevators and stuff, honestly to think that all that money is for 1 doorman's salary and cleaning and fixing bits and bobs here and there is crazy, cause you still have to pay for ALL your other utilities like electricity, water, gas, internet, etc.