Hi, I am thinking about buying a first gen iphone of a friend,. but I need a few suggestions The Iphone works perfectly but, the glass overlay as cracks at the top of the screen by the speaker, and some on the top quarter part of the screen. The glass is missing about 30% of the top by the speaker. some scratches on the back. I was wondering how much I should buy it for, should I buy it at all?, and how much will it cost to DIY on the glass overlay on the screen. THANKS!