like i did last year i want to sell my iphone so i can get the new one unfortunately us loyal at&t customers have to pay there ridiculous amount.

my question is should i sell my iPhone 3G 16 gb used and with an unlock or should i just say somethings wrong with it and get a new one at the apple store? just tryng to get enough for a 3gs its horrible what the value of this device is now that theres a 99 dollar iphone

thanks, maestro