I need some advice. I had a problem with my 3GS and Apple ended up giving me a brand new 3GS 16gb to replace it. I haven't even taken the protective plastic off the new phone yet. How much could I sell this phone for on ebay? I am eligible for the partial upgrade so I can get the new phone coming out this summer for what I think should be $399. If I could get $400 or more, then I would consider selling it and just buying a flip phone in the mean time until the new one is released. What would you do?