Log in to your Amazon account.
Hover your mouse over "Your Account"
Click on "Your Orders"
You will now be on a page listing all the items you bought in the last 30 days.
Click the "Return Items" button on the right side.
Check off the item(s) you want to return and select the reason from a list of reasons.
A few of the many reasons listed are...
Damaged, Better Price Available, Different from description, Defective, No longer wanted.
Then you will be able to print a postage paid return label.