Today only, Newegg offers the HGST Deskstar 4TB NAS Serial ATA 6Gb/s Internal Hard Drive, model no. H3IKNAS40003272SN, for $164.99. Apply coupon code "CMPAYPAL30" and checkout via PayPal to cut it to $134.99. With free shipping, that's $9 under our August mention and the lowest total price we've seen. (It's also a current low by $30.) This 7200rpm hard drive is designed for NAS systems and features a 64MB cache.