Rocco Flat Premium WordPress Theme ($45, Last Update: 29 May 14) – Rocco is Fully Responsive, Retina Ready, Clean and Flexible theme.
SimpleFlex – Flat One Page WordPress Theme ($40, Last Update: 20 May 14) – Simpleflex is a premium, creative, ultra-responsive, and retina-ready WordPress theme, that offers you one page and multi-page layouts with the latest and most powerful features.
Simplicity – Creative Flat Retina Theme ($45, Last Update: 10 June 14) – SIMPLICITY is an creative flat retina WordPress theme.
Swatch – Flat Responsive Multi-Purpose WP Theme ($55, Last Update: 29 April 14 ) – Swatch is a flat, super configurable and fully responsive WordPress Theme. Swatch takes the new “Flat Design” philosophy and puts you in control of how the theme can look as much as possible.