It's 2025/2026, and more dynamic pricing is needed to provide transparent shipping costs to customers. On the Rates Configuration page, add these to "Margin Type & Value":

Add Flat Margin Amount (Order Value)

Add Percentage Margin Amount (Order Value)

And update the existing labels to be:

Add Flat Margin Amount (Shipping)

Add Percentage Margin (Shipping)

Dynamic costs, such as those of new tariff laws, etc., can then be addressed using this approach, which merchants are more than likely willing to accept reasonable accuracy over no accuracy. As-is, StarShipIt is less than 54% accurate for US-destined orders, with no built-in methods to close the gap. The StarShipIt Zonos Landed Cost solution remains a value-add for those seeking an even more precise option.