I sold my iPhone 4 not 4S but the regular iPhone 4 32 Gigs for $320. I had it originally posted for $400 but I knew that was not gonna happen. I threw in all the extras I had with my phone. I threw in the fact that I could restore to 4.1. I sold it FACTORY Unlocked not through the jailbreak but through Apple. My phone was a GSM. I guess many people are not into CDMA phones to be honest with you. My sister has been trying to get rid of her phone for 2 weeks now and not a single steady offer yet and she's selling her iPhone 4S white 16 gigs.
No scratches are a plus. I sold my phone through craigslist. First look at the prices they're selling them for and what they're offering with them. I sold from cars to phones to weights through craigslist. Make sure you sell them at a public well lit camera filled location don't be crazy and meet someone in a dark alley. Good luck with your sale.
What's the matter? CIA's got you pushing too many pencils?