How to set price tiers
Edit a product. Check off the “Tiered Pricing” option
Enter an unlimited of price tier levels. In the screenshot example, a user would get a $5/item discount if they added 10-19 of the product being edited. They would receive a $10/item discount if they added 20+ of the product being edited.
Save your changes.
When a user adds the product to cart and reaches a price tier level, the amount they save is shown to them in the “Discounts” part of their cart.