This is a very cool mod! It allows you to have a site wide percentage or specific $ amount mark up, category mark up and product specific mark ups all at the same time!! it will be located under the config menu on the admin panel
In order to install this mod on your website, I will need FTP access to your server and admin access to your zencart admin area. Once payment has been made, I will email you asking for that information and let you know the timeline on when the mod can be installed.
The charge for this item is for my professional help / time / knowledge in getting the mod installed and up and running on your website.
The code for this mod is freely available on the zen-cart.com website in the downloads area. If you just need the code to install yourself - please go to the zencart website and download it.