Western Digital Caviar Green 2TB 32MB Cache SATA Internal Hard Drive for $229.99 shipped. Here is a screenshot for your reference. This drive gives you the bragging right of having the biggest drive currently available on the market. Note that it comes in OEM packaging, which means no pretty retail box but is otherwise identical. This drive is part of Western Digital’s GreenPower lineup, which reduces energy consumption. Most places have it for $249 or more.