Hi, I'm a first time poster, long time reader. I did a bit of looking around and couldn't find any good place for information on this subject. I bought an iphone 3G the week they came out. and In my haste, I got the 8GB. Now I really want the 16GB. So, What do I need to know before trying to sell my iphone. I see phones on craigslist asking for as much as 800$ for a jailbroken iPhone 3G 8gig (like mine). And on ebay I see them going for 500-700$. If I could unload my phone for anywhere near that, I would be able to afford a 16GB and have some money to spare. Now, I read that you can't buy the iPhone at its normal price if you are an ATT customer, but even at 399$ (which i believe is what it would cost me), I'd still make a profit. would other att customers be able to use a jailbroken phone with their sim card? Will my apps that I bought be transferable to the buyers itunes? what else should you know before selling? Thanks!