Here is a sample of Shopmate, a ecommerce ui kit that will help your ecommerce related interface project. It contains components suited for creating a shop website or application.
The download file make using PSD and Sketch file format has a web and mobile page design so you can already start creating a one page template. All screens and elements are fully editable, vector based and pixel perfect. They have well-organized layers, properly named and grouped.
This freebie was designed and released by Igor Savelev.