Hi,

In Odoo see how promotion works in Odoo ecommerce 17 and how to remove it.

We can create a promotion

1)Create a Promotion from Sales module for purchases over £30 and add free shipping inside the reward.

2)See the promotion of Free shipping at e-commerce.

3)Archived the promotion from the Sales module.

4)Go to the website and see the archived offer on shipping not visible. Afterward, you can change the price to £50 know the difference, and unarchive it

Hope it helps