Throw out the high-value outliers. 

How high can housing prices in the City of Detroit go?

I would highly recommend the "Guns N Roses Method." 

This home has been highly operational with high rates of occupancy, bringing in anywhere from $500-$1500 a month in overage beyond our monthly expenses.

I know when i travel to hotels ( which is almost every month) I check for coffee pods and will choose hotel that has them  then i bring my own pods LOL  unless its a real high end hotel and they have the ultra coffee makers  do your cleaners know how to clean the water repository on a Keurig?

Orlando’s solid too, but competition’s high, and some areas lean on tourism.

So the barrier to entry is not as high as traditional investments.

I have used both TSP loan and HELOC to purchase investment...I certainly thought the ROI from real estate was better than relying on highly fluctuating stock market. 

This home has been highly operational with high rates of occupancy, bringing in anywhere from $500-$1500 a month in overage beyond our monthly expenses.

I set my rent standards a little high and realized that rent is actually not that high.. we have a morgage on it and it looks like the house is selling for more than we originally paid 4 years ago.