It is super easy to use. Once you set it up it is hands free and just dose it's thing in the background. It automatically opens cases for you in your seller central account for missing items, incorrect orders, and inaccurate fees. It dose all this from a little program that you install on your computer. It just runs in the background and you done even know it's there.
It has got well over $1000 in refunds back from amazon for me!