Only 10/13 and 10/14. Slickdeals says they are unlocked. Mixed reviews in the thread on subject of dealing with their rebates.
$768 @ visible, requires port and new account. $200 samsung gift code, $200 prepaid mastercard, after 2 months’ service payments.
$25-40/month.
Potential cost:
$768 - $200 - $200 - 12% rakuten ($92.16) - 7.5% (Chase Freedom, pay through paypal. Or possibly chase ink paid directly. $57.60) + $25x2 (service) = $268.24
($200 samsung <> cash equivalent, though)