Hi guys. My back housing has some scratches now and I was thinking about replacing it. I found plenty of them on ebay for about ~$16 shipped but was wondering how good is the fit? I am afraid that it will not fit perfectly and have some cracks and unwanted spacing. I also saw Ifixit selling back housing but it is $59.. Anyone have any idea why the hell theirs is so much more expensive? Would love to hear your experience with replacing back housing that you bought from ebay or other place.