Best Buy offers the Western Digital 2TB Green Serial ATA 6Gb/s 3.5" Internal Hard Drive, model no. WD20EZRX, for $79.99. Coupon code "ESCAPKT24" cuts it to $69.99. With free shipping, that's the lowest total price we could find by $5, although we saw it for $5 less last week. This drive purportedly consumes up to 40% less energy than standard mechanical drives. It features a 64MB cache. Deal ends March 17.