I have an iPhone 4 that is basically like new except for the cracked glass on the front. I have an OtterBox case on it that makes it usable. I've thought about trying to get the glass fixed but I'm eligible for an upgrade and considering going up to a 5 and selling my 4 to offset the cost. But I'm not sure what a fair price would be to ask for it. The glass is only cracked at the bottom of the screen, mostly in the bottom right corner, and a single almost unnoticable crack in the upper left corner. Otherwise I've taken good care of it.