From Samsung US site. with a 1-year US warranty. Can trade-in any phone that powers on and without a crack on screen or camera. Free shipping with Samsung.com account. Free registration.
$50 rebate is available if you have a phone to trade-in. Phones that turn on, no cracks on screen and camera are eligible. You have to factory reset the phone for trade-in.
Sprint version $20 more.
AT&T version $30 more