Ours gets $80 total, for 3 hours of work once a week.
Sorry, but your porteña friend kind of makes me want to throw up. Most mucamas travel an hour or more each way, in truly crappy TBA conditions, to scrub up our grime, and Argentines think they should be grateful to earn less than the current price of a cafe con leche. They abuse the system because they can ("slave wages or unemployment, take your pick"), and then complain when the maids turn around and abuse the system right back. I actually have an Argentine friend in Italy who complained that she can't afford to have another child, because in Europe, "help is so expensive compared to Buenos Aires!" (after getting sued by the illegal immigrant she had working en negro.) Yes, damn that first world and its livable minimum wage...