On the Shipping costs tab, you can see a list of shipping costs available for the given shipping option. You can also define new shipping costs for this shipping option from here. There are two types of shipping:
1) Flat shipping
No shipping cost is defined. The same cost is charged for all shipping for the given shipping option, as defined in the Shipping option charge property on the General tab.
2) Shipping based on weight
Shipping cost is defined and the cost is charged for the particular weight range. Please note that the cost of the lowest weight range is defined in the Shipping option charge property on the General tab.
If you need to add a new shipping cost, click the New shipping cost link. You can also Edit () and Delete () the existing shipping costs. After clicking the icon in the header of the Actions column, a context menu is displayed, offering options for export of listed data to various types of files.