Shipping is based on the order's subtotal. A dollar value is set
for fixed rate shipping costs.
When an order's subtotal is equal to or less than the fixed rate,
shipping is equal to the decimal value in the fixed rate element of
the client-selected shipping method.
When an order's subtotal is greater than the fixed rate, shipping is
determined by multiplying the order's subtotal by the decimal value
in the percentage element of the client-selected shipping method.
No shipping field is required in the store's database for this shipping method.
The order's subtotal is compared against a set of subtotal range values
and associated shipping costs to determine the base shipping
cost for an order.
Shipping methods are capable of manipulating the base shipping cost.
No shipping field is required in the store's database for this shipping method.