InventoryLab allows you to enter estimated inbound shipping charges in order to help you determine the potential profit for items you're listing.
To change the rates, click on your account name in the upper right, then choose Settings.
Click Calculations on the left side of the screen. There you can make any needed adjustments to the FBA Inbound Shipping Rate field.
This will change the estimated shipping rate for the Profit Calculator in List, Scout, and Scoutify.
Note: Please keep in mind that these amounts put in this section do not carry over to accounting. Actual inbound shipping charges are synced as overhead expenses at the close of each of your settlement periods with Amazon.