Sold my 5 a week ago for $300 with a few accessories and all original accessories. But my 5 was in perfect condition since I just had it replaced a month ago at apple.
Here is some very important advice, which I usually don't give. Any iPhone 5 (black or white, any capacity) will sell for A LOT more if it has iOS 6 on it. FACT.
I just got $200 for an iphone 4 on ios 6.1.3 from AT&T.
I have a 5 32gb still on ios 6.1.4. Other than not getting some apps, its still pretty fast, battery life is great, and its lived its whole life (1yr) in a leather case.
I'm tempted to get a 5s even though I got my 6 Friday. I would want a 5s on ios 7 though.