Frys YMMV via Google Express: WD Red NAS 4TB Internal HDD Drive - 3.5" - WDBMMA0040HNC. $98
Frys YMMV via Google Express is selling the WD Red NAS 4 TB Internal HDD - 3.5" - WDBMMA0040HNC for $129.99. Using coupon code EXTRA25 brings the price down to $98. Shipping is free where available. Sales tax where applicable.