Hi Cory,
Fees are explained here:
http://www.etsy.com/help/article/2144Specifically to your question:
"Each listing on Etsy costs $0.20 USD when the listing is published. A listing lasts for four months or until the item is sold. After four months if the item has not sold, then the listing expires. Listing fees are added to your monthly Etsy bill."
For sold orders you will have transaction fees and if order is paid by Credit Card or PayPal there will be those processing fees.