Newegg offers the Western Digital 6TB WD Green Serial ATA 6Gb/s 3.5" Internal Hard Drive, model no. WD60EZRX, for $219.99. Apply coupon code "VCO2015BTS" and check out with Visa Checkout to drop it to $194.99. With free shipping, that's $25 under our June mention, a current low by $14, and the lowest total price we've seen. It features a 64MB cache. Coupon expires August 31.

Note that this coupon can only be used once per account.