Volume Discount | Notion

The Volume discount can be given either with a % discount, a fixed monetary sum discount, fixed price or applied only to the cheapest item

Choose the preferred discount logic and insert the amount of the discount in to the empty field under discount logic
In the fixed discount and fixed price options, you can also add tiers, where each tier unlocks a new discount. For example the customer pays 3 euros for 3 donuts, 5 euros for 6 donuts and 6 euros for 9 donuts.

Another example of a campaign with volume discount is buying items and getting an item for free, buy 3 for the price of two for example.
In the example below, when the customer buys 3 hot dogs, the cheapest item will be given a 100% discount

You can add a description to the benefit in the Description field
To define Applicable products, click on the Add button and add the products that the discount applies to
Insert the start and end time to the campaign and click on the toggle next to Published to publish the campaign
When you are ready, click Save changes

To define the sales channels and merchants that the campaign applies to, click on the Restrictions tab