formula in Countifs

I have a column of dollar values. I am trying to write a formula where I look at three different ranges of dollars in the column and equate each dollar range with a value. For example: cells in the column that are >=$2000 and <=$3000, I want each cell counted as 0.5. Other cells in the same column that are >=$4000 and <=$5000, I want each cell counted as 1.0. And other cells in the column that are >= $6000 and <=$7000, I want them each counted as 2.0. thank you.