newegg offers the Western Digital 2TB Red NASware Serial ATA 6Gb/s 3.5" Internal Hard Drive, model no. WD20EFRX, for $119.99 with free shipping ($0.06/GB). (Amazon charges the same.) That's the lowest total price we could find by $8, although we saw it for $10 less three weeks ago. Designed for NAS systems, it features a 64MB cache.