Your product content for your website changes frequently, you have discounts to offer which change quite often due to your stock levels, for example and you wish to control these features by yourself or other individuals within your organistion.
An appropraite route would be to use a Content Managed Solution (CMS) shopping cart solution allowing you the editorial and promotional power you require.
The E-Commerce or shopping cart solution we use and recommend is Drupal's Ubercart CMS.
Typically you can offer
Features include
What is Ubercart?
Again this is GNU free open source software, and is based upon the Drupal framework. The combination of Drupal and Ubercart provide a powerful e-commerce solution.
Ubercart was designed to take advantage of Drupal's core and contributed systems, providing its users with complete shopping cart solution that seamlessly integrates with other parts of your company website or community website.
Please visit Ubercarts website for more information and demos.