In West Coast US, my friend says, you could get $4.5 to $6 per hour. In Sydney, Australia, at least $14 per hour, and that's barely legal.
In here, we get service charge, between 5-10% of the food price (which is already very expensive by global standards). For a restaurant that pays its waiters about IDR 3 million (EUR 230) per month, they sell sauerkraut + bratwurst + mashed potato for IDR 100,000 per plate (EUR 6.60).