Go to your item that sold. Look for the drop down on right side of page, and click on Order Details. It will tell you what the item sold for, what the shipping was and what tax was paid by the buyer. If you want to see what you paid for the shipping label, Go to your Selling Page and look in the left column under "Sell". You will see Shipping Labels. Click on that and you would be able to find the shipping label for that item. It will tell you your tracking number and you should be able to view what you paid for the label when you purchased it. This might not be the same price that the buyer paid as you might have gotten a discount on the shipping label cost based on whether you pass the discount on to the buyer, or charge the buyer full retail of the label. You determine that when you calculate the shipping cost when building your listing.
