Seagate Barracuda Green ST2000DL003 2TB Internal Hard Drive for $109.99 shipped.  Here is a screenshot for your reference.  This drive features 5900 RPM, 64MB cache, and SATA 6Gb/s NCQ interface.  Note that it comes in OEM packaging, which means no pretty retail box but is otherwise identical.  Most places have it for about $134.