Deal live again!
Best Buy.com has 4TB WD Easystore External USB 3.0 Hard Drive (WDBCKA0040HBK-NESN) for $89.99. Shipping is free or select free store pickup where available.
The bare drive inside is a Western Digital Red (NAS) drive with SATA connector. It has a 2 year warranty, but it's description is "WD easystore Desktop" with a model number of "WDBCKA0040HBK" when you do a warranty check on the WD website.
Confirmed Bare Drive model: WD40EFRX w/NASware 3.0.