Good place to trade my iPhone 5?

NOT CRAIGSLIST OR EBAY. 32GB white iPhone 5 for sprint and wanting to trade for a different phone.

You can try best buy or gamestop, though gamestop will likely bend you over on what they can give you for it.

If you want good buck, eBay, otherwise any retail seller will be willing to offer half of the price, eBay can generate $700 $800 for latest iPhone devices. I know you don't want eBay, but unless you don't care about the money, that's the only place.