I'm considering selling my black 16 GB iPhone 4 on eBay. It has a few scratches and the mic when recording video doesn't seem as crisp compared to when I first received it, but overall it's still great. With the money I plan to purchase a new white iPhone to replace this one since although the scratches aren't intrusive or anything, they bother me a bit. Plus, when the new iPhone comes out I think I'll be able to sell the white iPhone at a higher cost due to it's more recent release/hopefully lower amount of scratches. Thoughts? Is it smart to do this sort of thing or not? I sold my 3G on eBay before and started it quite low... I'm just nervous I won't get $300+. I believe it's $399 for the early upgrade (not positive) so I need at least that. Thanks for your time!