Unfortuneately, you are using resources that are famous for misrepresenting information.
Homes appear here that have never been for sale but have a value in the price field.
Homes appear for sale that come from RealtyTrac with super low FAKE prices.
Homes appear with one street view image from Google maps, that are not for sale.
Then to compound the problem futher, many are working with data from 2009 when prices WERE really low. It not 2009 anymore.
If you are looking to make a real estate purchase in Miami, you need to contact a Miami real estate professional. Please don't ask them to waste their time looking for $1,000 anything. Add two zeros to that nummber then give a Miami agent a call and get plugged into the data base that has the properties that is really for sale.