Looks like Sam's Club is having another sale that starts tomorrow morning (tonight online). This one seems like a great deal after the $50 gift card that comes with it. Currently showing $598 online but not for sale yet. Says free shipping online too. I bought the Vizio 50" they had at their sale last week for $348. Would have been a tough call if I knew about this one!
Looks like Best Buy has the same model in their Black Friday ad for $497.99.
More TVs and other items in the ad