For this particular listing that is what it says it is but when buying a property and you get serious, you should ask to see a copy of the last actual month's expenses so you can verify that it's actually the amount. Some listings are errors or can be drastically different.
Monthly HOA fees can vastly differ even for similar-sized properties in the same area. The monthly fees go to pay any staff like doormen, security staff, cleaning of the common and general areas, insurance, cleaning supplies, fees to the property administrator, etc. Each individual property owner will have ABL bills for their properties as well that they are billed separately for. Obviously, the more staff that a building has, the more liabilities and expenses they will have.
Also, some buildings are very poorly managed and some buildings have really good property managers. The union for doormen is very strong and it is often times very difficult to fire staff even when they are horrible.
Each month, the building HOA will send you the actual expense and you can see the exact breakdown of that monthly expense. Typically the name of all the owners will be listed on the HOA as well as the amount each apartment owes. Some buildings are very poorly run and often times, there is fraud and abuse with some property administrators.
You should also pay special note to see if any property owners are behind in payments. It will show any owners that haven't paid or paid late. The health of a building HOA typically can be noted from looking at the actual HOA statement. You have to also consider how many units are in the building and the # of floors in the building as each owner will be a pro-rated % of the expenses based on the size of their property.
Many buildings have deadbeat owners that haven't paid their HOA fees in a long time and sometimes all the other owners will have to carry the weight of these owners typically until the property is sold. Sometimes this happens when the person dies. There is a lot on information to be gleaned from looking at the actual HOA statement.
On new construction buildings, typically the building will require an initial deposit for the reserve fund in the event that something happens. The "fondo de reservas" but you get this back once you sell the property.