Many large homes in Miami are rented for those prices, as it is considered a vacation rental for several families, or in many cases they rent to movie or commercial crews for filming.
I have worked as an extra on many movies here in Miami and the houses are utilized for the shoot and the family is given other housing during the shoot if it is their primary residence. It is not unusual. It just may not be for the average renter!
This is the rental price per month in high season, sorry about that! We wish!!
If there is anything I can assist you with please feel free to contact me.
All the best,