I have a box in pristine condition for sale for a very reasonable $625.00, with free shipping anywhere in the USA.
Ha... Ha.. Ha!
Ok, just kidding.
In case you may not remember, every box has a label with specific info for the phone inside it. It's an FCC regulation. So buying a box with someone else's info is not a smart idea.
Even if your buyer says they don't care, you're making a mistake which could technically come back to haunt you. It's misrepresentation.
Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_3_5 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8L1 Safari/6533.18.5)
^Or you could easily remove said identifying information.