The theme uses the WooCommerce plugin for its ecommerce feature which you can download here.
The theme supports WooCommerce plugin for the E-commerce feature. You can download a free copy of the WooCommerce plugin at www.woothemes.com/woocommerce/. Just upload, install and activate the plugin. WooCommerce can instantly setup your pages like the Shop, Cart, Checkout, etc. with just a click of button.