This is not really free shipping as the listing states----The item that you are purchasing is the shipping label.
USPS Ground Advantage is a shipping service that replaced First-Class Package Service and Retail Ground, offering a 2-5 business day delivery timeframe for packages within the continental US. It includes free package pickup, insurance up to $100, and options for returns. Pricing is based on weight and distance (zones), with tiered rates for packages up to 15.999 oz and then pound-based rates for heavier packages up to 70 lbs.
Ground Advantage for under 4 Oz---you are paying for the shipping label.
