Iphone 4 ebay/amazon? Scams?

I want to sell my iphone 4 8gb brand new in box never opened, i've seen videos on youtube where people buy the phone rip out parts and send it back to you and you get screwed due to the return policy.

*How can i sell an iPhone 4 brand new in the box. Without any chance of it being returned to me so i don't get scammed?

Added (1). I want to sell it for what its worth brand new in the box. Gazelle.com is cheap… Is there anything that amazon or ebay does to protect the seller from scams? I just don't want to get a iphone 4 brand new sent back to me with missing parts ya know?

No guarantee as credit card could also be stolen. You can check to see if its a reputable buyer by seeing their history, or sell on craigslist so its cash transaction.

Sell it to http://www.gazelle.com/iphone