Etsy.com

If you haven't heard of Etsy it is a great place where you can sell your work. This site is aimed more towards less expensive work, like prints or photographs that you may have laying around and want to get rid of. There is a 20 cent cost to place items on the site for 4 months. There is some internet marketing info on the site to boost your page views/sales if you want better results. It is pretty cheap to try, who knows, you could sell all that art you made, don't really want to keep, but don't want to just throw out. (Keep in mind the art sale is coming up in November)

http://www.etsy.com/