How much to sell iPad 16gb WiFi only for?

I have the 16gb WiFi only iPad and was thinking about selling it. It has a case but still has some barely noticable stratches on the back and a minor chip on the bottom right corner. I would like to know a reasonable price for selling this with original box, charger and the case found here: a href="http://store.apple.com/us/product/MC361ZM/B?fnode=MTc0MjU2Mjc&mco=MTcyMTgxNTk" rel="nofollow"http://store.apple.com/us/product/MC361Z…/a