blackberry 9300 3G - sale or swap -

i will sell my blackberry 9300 for £90 as it has a small little part missing from the side of the exterior yet easily fixed with a new housing just dont want a new one on it . it is in good condition no matter what and a good phone , i have a charger and a box with it. i would also swap this for a swap that i would use so W.H.Y?