I have just downloaded the latest version of Shoppica.
I am running WordPress 4.2.2 + WPEC 3.9.4 + Gold Cart 2.9.9 (which enables grid view)
It seems that the settings within this Shoppica theme all apply to WooCommerce, not WPEC. I am confused by this.
For instance, I have selected for the shopping cart to appear to the right of the menu, but it does not appear. I took a look at the header code for the Shoppica theme and all I see in there are calls for a woocommerce cart, not WPEC.
Also when I try to adjust the look of the store using the Shoppica Theme Options > Store > Category > Products > Price Label / Price Size / Default Product Listing etc… nothing changes.
The look of the store seems to be solely controlled by the WPEC settings page, as if the Shoppica theme is not at all integrating with the WPEC plugin.
I followed the documentation but again, nothing in the theme settings seems to control the layout of the store.
Please help me get my store to look like your demo site.