MUST GO! iPhone 4 16gb black ?

MUST GO ask just bought the new iPhone 4s so surplus to requirement. Just over a year old, excellent condition always has had a screen protector and been cased ( however some very hairline marks on back due to one of the case it was in) does not effect the overall iPhone in any way. Black 16gb unlocked as purchased from the apple store. Comes complete with box (earphones have NOT been used at all still in packaging) Cash on collection Buyer must collect Will NOT post over seas or except PayPal.