apple iphone 3gs 8gb o2 !

hi there i am selling my iphone 3gs 8gb in mint condition was replaced by o2 at the end of december comes with box and accessories that have never been used.also comes with 4 cases two red two black one of which is an iskkin2 case still boxed which cost 25 selling due to upgrade of samsung galaxy s2 phone is currently locked to o2 but i will be asking them to unlock this phone has never been jail broken and its running on the latest firmware 5.1.1.will not post face to face deal at my house or meet but no to far will upload pics when i get my new phone in the next 24 hours.this is a great phone to upgrade to