Hi Say

Hi Sai

Since odoo v18 ou can do more advanced calculation of your shipping costs with spreadsheet

1. create a Quaotation template and add Quota caluculator

the quote calculator is a spreadsheet you can see examples in the runbot (at the end, the template has solines , one of tehm is a delivery, and there the result should be set)

you can make as formula sum of saleorder lines amounts

Once you use in your SO this template you will see a smart button to compute you shipping costs

each saleorder will use it own spreadsheet calculation

regards

Daniel