[jeremye]

I have created a custom reports page that shows sales by item total, and sales by quantity for any date range you want. There is also a "Cumulative Report" button that automatically generates a report from the start of your orders in the database. Note, I have only tested this on versions 3.4.8 through 3.4.14, but it should work as long as no major field names have changed in the xcart_orders and orders_details tables.

If you are interested, I can cleanup the code and paste it here, but I won't spend the time on that until I know someone is interested.