i phone 3gs 16gb new unlocked to any network ?

hi i m selling my i phone 3gs 16gb new unlocked to any network .my old phone water damage and insurance company give me new phone i just open it to check is working good and i connect to check with iTunes is working with latest 5.1.1 apple software. i prefer meet and cash on collection is best. but i can post if buyer request. i m selling in 200.