The Postage Panel

Use this section to set the postage calculation method for a product. There are 3 options available (see below). Check the box next to whichever method you would like to use.
Editing Products: Postage Panel
Default Postage
The postage cost will be calculated using the Postage Rules that have been set in the Manage > Postage section of the control panel.

Free Postage
Postage costs do not apply to this product. This setting will override your Postage Rules for this product only.

Fixed Postage Cost
This product will use its own unique postage cost. This setting will override your Postage Rules for this product only. With this method selected, you will need to enter the postage amount in the Fixed Cost box that appears below.