Micro Center offers the Western Digital 2TB WD Intellipower Serial ATA 6Gb/s 3.5" Internal Hard Drive, model no. WDBMMA0020HNCNR, for the in-cart price of $79.99 plus $5.99 for shipping. That's the lowest total price we could find by $29. It's designed for NAS systems and features a 64MB cache.