Fixed Rate Shipping in Umbraco Commerce.
Fixed rate shipping in Umbraco Commerce allows you to define a single, fixed shipping rate to apply to an order. This is the simplest of all the shipping calculation options, but is also the least flexible.
Go to Settings > Stores > {Your Store} > Shipping Methods.
Click Create Shipping Method.
Choose Basic as the shipping provider.
Choose Fixed as the calculation mode option.
Enter the Shipping Method Name, Alias, SKU, and optional Tax Rate.
Enter a fixed rate for the shipping method.
Select the countries this shipping method should be allowed in.
Optionally, define a country's specific fixed rate should you wish to have different rates per country.
Click Save.