3TB Western Digital Elements USB Hard Drive (Factory Refurb): $100

From 9to5toys.com:

MacMall via eBay Daily Deal offers the factory-refurbished Western Digital Elements 3TB USB 2.0 External Hard Drive, model no. WDBAAU0030HBK-NESN, for $99.99 with free shipping. That’s $0.03/GB, $20 below our mention of a new unit from three days ago, and the lowest total price we’ve seen for this drive. (It’s $18 below the current price low for a new unit.) This drive uses GreenPower technology to reduce power consumption by up to 30%.

A Western Digital warranty applies; however, MacMall does not mention the length of this warranty on the product page.