Staples offers the Toshiba 3TB Canvio Desk USB 3.0 External Hard Drive, model no. HDWC130XK3J1, for $99.99 with free shipping. that's $0.03/GB, $10 under our mention from two days ago, and one of the cheapest 3TB USB 3.0 external hard drives we've seen without rebate hassles. (It's also a current price low by $15.) This enclosed 3.5" hard drive features an 32MB cache and runs at 5700 rpm.