Answer
For Montevideo, the stated utility-cost range is very broad: from $100 to $1,500 per month, depending on apartment size. Therefore, one average figure is not enough to calculate the budget.
The actual amount can include various items: gastos comunes, water, electricity, gas, Internet, heating, hot water, parking, and maintenance of shared amenities. What is included depends on the building and the contract, and winter expenses may differ from summer expenses.
Before renting, you should request the latest bills, review regular and seasonal charges separately, and add them to the alquiler. If the range seems too wide, it is usually due to differences in housing type, size, heating, and the level of services provided by the house or building, rather than a single standard rate.