Historically you are careful with free shipping to ensure the loss is less than say a retail cut of the price. That is why minimum orders were so popular, if i

Historically you are careful with free shipping to ensure the loss is less than say a retail cut of the price. That is why minimum orders were so popular, if it cost say $8 to ship something and a retail margin is 15% I can do the math on a break even point where it is a wash or better for the vendor.