Iphone 3GS 16GB boxed O2 - MUST GO!!! -

I have a Iphone 3GS it has the box with charger, and headphones it is installed with the latest firmware IOS 5.1, it is on the 02 network but can be unlocked easily. The Iphone comes with two case protectors it has scratches barely visible on the screen and one/two at the back of the phone. The home button/sleep button has also come off but still works with a little force. Comes with free 02 sim too. Will consider swapping for ps vita with memory card and games. will not accept anything lower than £110