Western Digital Caviar Green 1.5TB 32MB Cache SATA Internal Hard Drive for $119.99 shipped. Here is a screenshot for your reference. It has the bragging right of being the biggest drive currently available and is part of WD’s GreenPower lineup, which reduces energy consumption. Note that it comes in OEM packaging, which means no pretty retail box and marketing materials but is otherwise identical. Most places have it for over $140.