We have spoken about Artisteer in the past on how cool Artisteer is, and how it creates custom themese for WordPress, Drupal, Joomla and more. It's pretty cool and comes in version that are $49 and $129. Its really cool and Iv'e used it before. If you are looking to EASILY make your own WordPress theme. If you can get a cool banner, your website will look awesome. They even have built in banners that look good.
As Artisteer does themes for Drupal, Joomla, WordPress, etc they can't add some customizations as they can't WordPress stuff that doesn't apply to Joomla, etc.
Enter the templateer. This tool is for people who are using Artisteer and are creating WordPress themes. It allows you to add functionality that is not available in Artisteeer, and some of this is actually added so you can adjust them on your website. Thats cool. The best part is it's only $29.00
Here is a screen shot of just SOME of the options added to your theme.