Newegg offers the Western Digital 4TB Serial ATA 6Gb/s Internal Hard Drive, model no. WD40EZRX, for $135.99. Apply coupon code " VCO2015BTS" and checkout with Visa Checkout to drop it to $125.99. With free shipping, that's $4 under our May mention and the lowest total price we've seen. (It's a current low by $8.) It features a 64MB cache and GreenPower technology for lower operating temperatures, low acoustics, and increased sustainability.