How to establish the value of transport in ecommerce automatically in the purchase.
Example
A customer registers an order in the ecoomerce and at the end of the purchase the total of the purchase is shown, additional should show the value of the delivery.
Standard operation
Product A 1000
Product B 2000
Total 3000
Desired operation
Product A 1000
Product B 2000
Delivery 100
Total 3100