On the sellers hub page click "Orders" instead of overview.
On that page will be a list of your sales line by line. You can then select your period of time, Month of October for instance.
At the bottom of that page will be 2 totals slightly left of center. The first on the left is your sales only, the one to the right is the total of sales and shipping.
Hope this helps.
"Laissez-faire capitalism (AKA The Great Material Continuum) is the only social system based on the recognition of individual rights and, therefore, the only system that bans force from social relationships." ~ Ayn Rand