MacMall offers the refurbished LaCie 1TB Porsche Design P9223 Slim Mobile External Hard Drive, model no. 9000293, for $59.99 with free shipping. That's $40 under the lowest total price we could find for a new one. It features data transfer rates of up to 5.0 GB/s.
A 90-day warranty is provided but it's unclear who supports it.