DVD Empire has this promo currently: Buy 1 Seinfeld Gift Set, Get 1 Season of Seinfeld FREE!
Save On “Nothing”! Double Dip on Seinfeld! Yes, you can dip…and then dip again…with their special Seinfeld sale! Buy either of the Seinfeld Gift Sets (Seasons 1-3 or Seasons 5 & 6) and pick up an additional single season of your choice absolutely FREE!