apple iphone 3gs black 16gb !

Hi i am selling a black iphone 16gb. It has cosmetic wear such as small crack near charge port and another small crack where sim slot is but none effect the phone itself 8888. The screen is as new. The volume button is being replaced in the next day hopefully (at most monday) Camera is excellent. Speakers good. The iphone itself comes with iphone charger. It has been updated to iphone 4s software including the new icloud The iphone has a small fault with occassionally turning itself off every so often, im sure it can be fixed but we have upgraded now and dont want the hassle (want to buy a ps3 :-) for new tv) genuine seller - have not had it looked at myself but will need to be seen by apple store to see why it turns off at times. Will not take less than 80 as I know it is def worth that or more - environfone offered 80 but takes up to 2weeks and we want quick sale :-)