I currently have the 2.4ghz 24inch Imac 300 gig HD, Radeon 2600 Pro with 4 Gigs of RAM. Im toying with the possibility of selling it on ebay or somewhere to get a Pro or Macbook Pro soon. What can I realistically expect for it on Ebay or elsewhere? I spent about $2000.00 on it about 8 months ago. It's in mint shape and has 10.52? I know its still a great machine, but im looking for either having a portable unit or with the Pro one that I can customize the video cards as they are offered..