Buy.com offers the Fantom GreenDrive Pro 2TB eSATA / USB 2.0 External Hard Drive, model no. GDP2000EU, for $99.99 with free shipping ($0.05/GB). That’s the lowest total price we could find by $26, although we saw it for $30 less last summer after a mail-in rebate. This “green” drive claims to consume 40% less energy compared to the average drive. It includes a 32MB cache.