my brother used to have an iphone 3g but he cracked the screen and tossed it long ago and has been using a blackjack with medianet for a while now. How much is the cheapest (16gb) iphone 3g-s going to cost him? and how about the 8gb iphone 3g? Thanks, sorry if that's a stupid question. i know its $399 for 16GB 3g-s for current iPhone 3G customers but he isn't one.