Your sales history is available via your Seller Dashboard.
First, visit your dashboard and click on "Orders" in the menu:
Next, select "Orders Listing" from the dropdown and you'll get to your list of orders:
Next, select "Export" from the right side of the screen, complete the requested information, and proceed with export. Exports are completed using a .csv file format you can open in a spreadsheet. Files contain all sales information including taxes collected, sales price, and customer information for your records.