In Magento, a discount given for buying more than one of a product is called tiered pricing. In the example below, you can see there are three price tiers:
The first tier is for buying 1 or 2 pounds at $14 per pound. The second tier is for buying 3 to 5 pounds at $11.90 per pound. The third tier is for buying 6 or more pounds at $10.50 per pound.
In our example store, the preceding tiers apply to any customer who visits the site without logging in. You can also create different pricing tiers for different groups of customers. This requires that the customer log in. Once the customer logs in, Magento (or you) can place that customer into a group. In our example store, we have pricing tiers for customers who have not logged in (anonymous visitors) and for customers who have created an account on our site and logged in:
When a customer creates an account in our example store and logs in, he/she sees this on the product page. Note the welcome message for the logged-in customer...