blackberry curve must go asap !

I have a blackberry curve 8520 as I want to get an iphone I have it for 3 months but it still looks brand new, thats why I want 80 for it. the phone is locked to vodafone but you can get it unlocked for cheap at a market. it comes with case and charger but cannot find the box.would like it gone asap do not hesatate to contact me