TOSHIBA Canvio Slim II 1TB USB 3.0 Black Portable External Hard Drive for PCs HDTD210XK3E1 for $64.99
Today only, Newegg offers the Toshiba 1TB Canvio Slim II Portable USB 3.0 External Hard Drive in Black, model no. HDTD210XK3E1, for $99.99. Coupon code "GREENMD271" cuts it to $64.99. (Amazon charges the same.) With free shipping, that's $0.06/GB, this the lowest total price i could find by $15. It operates at 5400 rpm and has an 8MB cache.