As one of its daily deals, Best Buy via eBay offers the Western Digital 1TB Mainstream Serial ATA 6Gb/s 3.5" Internal Desktop Hard Drive, model no. WDBH2D0010HNC-NRSN, for $39.99 with free shipping. That's tied with our mention from last February as the lowest price we've seen. (It's the best deal today by $14.) It runs at 7200 rpm and features a 64MB cache. Deal ends today.