I have worked in Fort Greene & Clinton Hill since 1979, then the average floor through rental was $175.00-$200.00 per month in 1979-1980. Of course in those days they did not come with new kitchens, diswasher, washers & dryers. They often had draghty windows. You often could not use a window air conditioners because the screw in fuses could not carry that electrical load.
Now the average floor through apartment is $2,500 - $2,750.00 with updated kitchen bathrooms, electrical and plumbing, washer & dryer in the building etc.
Feel free to call me if you need further information.
Realty on the Greene, LLC