WP eStore has built in stats feature that gives you overall sales data as well as itemized sales stats. This statistics is very useful but having the option to track sales through Google Analytics is really good so we added this option to WP eStore plugin.
There is now an e-commerce tracking addon that makes this integration very easy.
How to Add Google Analytics E-Commerce Tracking on eStore
Refer to the addon’s page.
Note: We now provide technical support for our premium plugins via our customer only support forum