If you dont already know, K2Joom provides bespoke and commercial K2 templates.
From single page views to full over ride modifications.

The site is Joomla 1.5 and all content is K2 2.4.1, except for the subscriptions and ticketing pages.

New version is in progress, which will include all demos on a seperate subdomain so that both 1.5 and 1.7 demos can be provided, making it easier to use and to manage.