How much can I sell my iphone 4 for sprint for?

I have a sprint iphone 4 it like new condition but don't knw how much I should sell it for or what to start off the bidding.

18000

They sell for $175-$225 on craigslist.

You can sell it in a online shop who will help you to sell iPhone with a good price. I have used cellitused to sell my cell phone or old electronics. Any way, you can start bidding from $160.

On the Sprint buy back program the least is for a iPhone 4 8GB=$168
Sprint buy back program.

You get a quote in Cash for iPhones. They quoted iphone 4 sprint 8gb at $188. You can visit their site at http://www.cashforiphones.com.