As I said earlier, its working now perfectly. It wasn't working at that time because never used it earlier. The chrome condition is still 9.5/10, and same with the back. If you can recall any scratches on chrome. Please highlight here. The protector is transparent so the potential buyers could see the condition.
The things you are looking in the 4 years old set, within your budget. I would advise you to be realistic or better look for 4s. That might fulfil your requirement. Good Luck !