price

So my school is planning a complete web site overall, and we are planning on introducing a CMS for the first time. I'm trying to convince them to use Drupal, but it's an uphill battle. Some of the people on the web site redesign team have heard of Joomla and Mambo and how easy it is to find a relatively inexpensive developer here in Thailand.

Is there a way to set variable pricing for volume discounts?

IE 1-10 widgets costs $5 each
10 to 25 cost $4 each
25 to 100 cost $3 each