As one of its daily deals, Best Buy offers the OEM Western Digital 1TB WD Caviar Blue SATA 6Gb/s Internal Hard Drive, model no. WD10EZEX, for $39.99 with free shipping. That's $10 under our mention from two weeks ago and the best price we've seen. (It's a current price low by $13.) This 7200 rpm hard drive features a 64MB cache. Deal ends today.