Iphone 4 32gb for sale and maybe swap!!!(unlocked) !

Hi i have an iphone 4 32gb in black unlocked to all networks which im looking to sell as i have a 4s. The phone is in very good condition has minor scuff on the side but not a big problem. The phone comes with abox and the charger Im looking to sell this phone for 280 or may consider a good swap, please do not make any silly offers and waste my time. TEXT ONLY WILL REPLY BACK ASAP!!!!! Thanks