Requesting extra charges, reducing shipping, and processing returns are not currently available through Fillz. If you would like to complete one of these processes, please sign directly into your AbeBooks account and complete them through the Members Menu.
Note: For extra shipping, you must not move the order to “In Process” or “Shipped” status within Fillz until the order has been fully completed on AbeBooks. For example, you have requested extra shipping, the buyer has approved it, you have processed the order on Abe, and the buyer has been charged. If you move the order before all of these steps have completed, the order will be cancelled on the marketplace.
For more information about using AbeBooks with Fillz, please here.