QD (Quantity Breaks/Discounts)

Quantity discount, Tiered pricing, Volume discount for Shopify

https://apps.shopify.com/discount-4
Sale schedule
Add the ability to specify the start and end dates of the campaign, so that it …
The discount is available only to the specified customers.
The discount is available only to the specified customers.
Free shipping for quantity or amount.
Minimum cart quantity/value based discount
Discount applied to the entire cart using the minimum number of products or the…
Custom discount placement
The ability to customize the placement of the table with Pricing Levels using C…