The Admin > Catalog > Products Price Manager page allows you to add per product quantity discounts.
- Select the product
- Press the Edit Product button
- Click the Add 5 Blank Discount Qty button
- Fill in the details
Any rows you don’t fill in will be removed upon update.
The screen you see will look like this:
Note: Quantity Discounts created using Products Price Manager will discount bulk purchases of a single product.