I didn't know they had this sale going on. I doubt that the discount for Black Friday will be $100, so I just went ahead and purchased one today. I only did so because I have 2 of the Best Buy Mover's coupons, which saves me 10%. (If it turns out to actually be $100 off I'll use the other coupon and repurchase and send this one back to save an additional $50.) So all in all I just spent $344 after taxes. Better than the Target deal considering it's just money taken off as opposed to having a gift card. Bundled with my $100 cashback on Chase, and selling two Fitbits I have, I should get back another $200, so I'm really satisfied with this purchase. The price has always been my main concern, so I can rest easily knowing I've saved a ton.
If it ends up being $100 off the SS models plus the movers coupon (which you can get for ~$10 on eBay) that would be awesome.
My local store has the 38mm SS open box (excellent condition) for $465 plus the movers coupon drops it to $442 out the door after taxes.