If you have been using the WooCommerce Admin plugin, version 0.23.1 was just released.
The features notes in this most recent update is the introduction of the term Total Sales. Previously they had it labeled as Gross Sales, which was not correct. So as a result, they have recalculated Gross Sales to reflect what gross sales are suppose to be:
The sales price times the quantity. Which excluded refunds, coupons, taxes and shipping.
There are also some changes to the filter names plus a few more odds and ends listed in the changelog on the post here.
Next on the roadmap is adding some documentation and support for extension development.