Unlocked Black iphone 4s 16GB ?

Hi, Here is my iphone 4s 16gb in black which is unlocked. It comes fully boxed minus the headphone for hygiene reasons. I am looking to TRADE rather than sell and I will consider almost anything as I would not mind trading down and getting some cash on top. Please contact me through TEXT as calls will not be answered. Also I am located out in Westhill just to give you a reference. Cheers.