With this configuration merchants can change price of affected return method of specific carrier
Let's see how it works
Go to the Settings -> Rules page and then click on "+ Add Rule" button.
Once you put Rule name, Description and Condition go to the "Set Actions" part.
On the "Set Actions" part click on the "+Add Action" button
Select:
"Shipping" and click on "Next Step" button
Select "Configure return method" then click on "Confirm" button.
On the showed fields put the following info:
1. Select a carrier you want to modify
2. Select the price ( note: the price is set up in Euro )
3. Select the affected Return method
Disable the "Carrier Service"
Go to the top of the page and click on "Save Changes"
This is what your customer will see when they want to submit return request.