ThemeForest.net

ThemeForest is an Envato Marketplace. At ThemeForest you can buy and sell HTML templates as well as themes for popular CMS products like WordPress, Joomla and Drupal with prices ranging from just $5 up to $40. Items are priced on the complexity, quality and use of the file. The site is home to a bustling community of web designers and developers and is the biggest marketplace of its kind.