i have an 8gb iphone 3g, black. the screen is new but the back has a fair amount of scuffs and a crack on the bottom (above the port) thats roughly 1cm. its jailbroken but you could always restore it. it works fine. interested?
i have some that just stopped working and you might be able to fix. i have a 3gs that was working and one day just stopped working, a 3gs that has a big crack all over the screen and a first gen one that i found in the street and works but i cant unlock it cause it is registered to someone.