Yeah, yeah I understand they are expensive brand new, but the newest version ( HD PVR 2 Gaming Edition) goes for max $100 on ebay, I've been watching them as I would like to purchase one and, so just a helpful tip to maybe expect less.
I would personally recommend taking more professional pictures and posting it on craigslist I got $100 for mine a week or two ago. Always sells better when the picture looks great! http://gyazo.com/09039e5425fa56d17bdded85e7c6c867