Girlfriend just got a new iPhone 4 black model and i have been tasked with getting rid of the old model. Its your basic 3GS 16GB model. No issues with it at all, its been in an otter box case for 90% of it's life. No major scratches or anything, this thing has never missed a beat. If you don't like the price then throw out an offer.
Here is a stock photo for those of you that don't know what an iPhone looks like.
http://www.letsgodigital.org/images/artikelen/64/apple-iphone-3gs.jpg