Many times we're faced with needing to manage special pricing for different customer groups or based on quantities purchased. Flexibility in pricing can help you meet the needs of your market and Magento gives you the tools necessary to accommodate those considerations.
In Chapter 3, Designs and Themes, we learned how to create customer groups. You may, for instance, wish to offer discounted pricing for your wholesale customers — those who buy from you for resell to their customers. At the same time, you want to sell products at regular retail prices for your regular customers.
By creating a customer group — say "Wholesale" — and assigning select customers to that group, you can set up specific pricing for a product that will appear to customers who are logged into your store and are assigned to the particular customer group.
Let's use our green couch we created earlier as an example of how to configure pricing for a customer group. If we go to the Product Detail screen for this product and click on Advanced Pricing under the Advanced Settings menu in the left sidebar menu, we see a section called Tier Price (we will also refer to this section later when we discuss quantity-based pricing).

To add pricing for a customer group, click on Add Price. If we wish to set the price for this couch — normally selling for $599.99 — at $350.00 for our wholesale customer, we might configure this new entry as shown in the following screenshot:

With this configuration, any logged in customer who belongs to the wholesale customer group will see this couch priced at $350.00 on your store.
It's probably quite obvious now how you can create quantity-based — or tiered—pricing for your products using the same configuration tool. By adding additional pricing tiers and setting a new quantity value, you can create pricing that changes based on the number of items a customer purchases.
As an example, let's configure the pricing to show a price of $550.00 if a customer buys two-five couches and a price of $500.00 if they buy six or more. We will apply this to all customer groups.

If we commit this pricing scheme, then when viewing the green couch in the store, we would see this pricing notice:

This notice may help stimulate higher purchased quantities by showing customers how much they can save buying more!