Complex sentence: The amount of money is arbitrarily set by the "trapito", not by the person who parks the car; the cost starts at an average of around $40 and can rise to $250 in locations near popular nightspots, attractions or events.
Split into simpler sentences: The amount of money is arbitrarily set by the "trapito", not by the person who parks the car. The charge starts around $40 and can rise to $250 in locations near popular nightspots, attractions or events.