Lenovo offers its Lenovo F360 500GB 2.5" Portable USB 2.0 External Hard Drive in Black, model no. 57Y6685, for $149.99. Coupon code "USP1M46685" drops it to $67.50. With free shipping, that's $0.14/GB, tied with our April mention, and the lowest total price we could find by $22. (It's also the least expensive non-refurb 500GB portable HDD we've seen since last fall.) Sales tax is added where applicable. It's USB powered and doesn't require an extrenal power source. Coupon expires May 28.