Newegg offers the refurbished Seagate Constellation ES 2TB Serial ATA 3Gb/s 3.5" Internal Hard Drive, model no. ST32000644NS, for $69.99. Coupon code "EMCASAV29" cuts it to $48.99. With free shipping, that's $15 under the lowest total price we could find for a new one. It features a 64MB cache. Coupon expires May 10.

A 90-day warranty is applied, although it's unclear who backs it.