First of all in order to view Ecommerce data from Analytics account, you will need to make sure that Ecommerce tracking is enabled and tracking code is setup on BigCommerce. Learn More
ProSEOTracker Google Analytics integration also covers the Ecommerce part.
In this Section you will be able to see which products are bringing you the most sales. So here we show the product performance table which include these metrics product revenue, unique purchase, quantity being sold, average price, average quantity and if any product refund amount.
So by looking into the above mention metrics you can check that which item is making you the most revenue and which are being sold but can be optimized more to boost their sales.