Giga Gallery is a beautiful premium gallery design for WordPress. It’s perfect for anyone who wants to showcase photos, artwork, screenshots and more.
The theme only has 3 page templates: the gallery template, a regular page template and a blog template. Though this should be sufficient for most people.
A single license for Giga Gallery costs $30 from ThemeForest. The original photoshop psd files are included with the download so you can easily modify the theme to suit your needs.
Link: Giga Gallery