I would like to sell my Macbook 2.0GHz Intel Core 2 Duo with 2GB of ram and 80GB hard drive. It has the 13.3" glossy screen and Superdrive. I'm hoping to upgrade to the Macbook Pro. Does anybody know a fair price to ask for the Macbook in a sale or trade? It is under warranty until Feb. 18, 2008 and eligible for Applecare until then. There are no exterior blemishes and no repairs/problems to report. It's the best computer I've ever owned. Unfortunately, the Macbook Pro...