Steps to create discount excluding SureBright Products
1
Create a Smart Collection
Name:
- Example: All products except Surebright
- Product vendor → is not equal to → Surebright

2
Create the Discount
Path: Shopify Admin → Discounts → Create discount → Amount off products
In Applies To, select Specific Collections:

- Search for the collection (All products except Surebright) you named excluding Surebright Products

3
Add other details as per requirements
4
Save the discount
Complete the discount setup and save your changes.
