Increase shipping charge for each item added to cart
I have my shipping setup and working where it calculates the shipping based on quantity. 1-3 items is $, 4-6 items is $$, 7-10 items is $$$, etc.
What I would really like to do is increase the shipping amount by $.50 for every item ordered over 1 total. So if my standard shipping was $2.00 for an item, adding a second item would be $2.50, adding a third item would be $3.00.
Is there an easy way to do this? I have played around but can't figure out how to do this.
Any help is greatly appreciated.