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I got $339 from GameStop for a like new 5 16gb. Not the highest, but it was CASH in hand, no mailing, no disagreement about condition once they received, no eBay empty box mail back scam, and no muggers.
 
I traded my 5-32g at Best Buy in store on launch day of the 5s. It had been dropped and had a dent in one corner and some scratches in another corner and I kept my charger and cable. They gave me $355 on a gift card that I used to get the 5s. I kept the cord and charger because they said it was only $5 more with them.
 
While I took the lazy way out, today when I bought my 5s, I asked the apple store staff what they would give me for my Verizon 5 32gb white. Their current price was only $202. I figured that as Verizon was only one block away, I may as well ask them what they are offering. They gave me $325. This was today (October 30th in NYC)
 
You'll get the most money selling it on Craigslist, the eBay. Craigslist > eBay because of the eBay fees.

If you want to do trade-in, Amazon will give you the most like you saw but it won't be cash. They will only offer Amazon gift cards in exchange.

Other buybacks are gazelle, technollo, buybackworld, and nextworth.

Or you can bring it to your local gamestop to get cash directly in their store.
 
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