Looking for a script that allows multiple users to auction text link ads.

I cannot find a mod or script that is similar to http://www.text-link-ads.com

I am thinking of using Drupal with the e-commerce mod because it has a auction node but it is to complex for the average Joe to figure out how to add a new item.

 

have you tried joomla with auction components? i know that joomla has some auction components