Update (10/15 1:00pm): ElectronicsValley has the Apple Watch 38mm Stainless Steel Case w/ Black Sport Band for $479.99 shipped (Orig. $549).
ElectronicsValley (Top Rated Plus seller w/ 99.3% positive feedback) via eBay Daily Deals has Apple Watch 42mm Stainless Steel Case with Black Sport Band for $519.99 with free shipping. This color combination originally sold for $599, but is no longer offered by Apple. It’s still available from Best Buy at full retail. Today’s deal represents the biggest price drop we’ve ever seen for any Apple Watch. Features include a heart rate sensor, iOS notifications, Digital Touch, and Apple Pay.