Lenovo has designed this laptop for low intensity tasks, so we expected it to arrive with a budget price ? but we didn't expect it to cost just £199 (about $334, AU$360). That makes it one of the most affordable notebooks we've reviewed. That eye-catching price undercuts every rival. We thought the Toshiba Satellite C50 was cheap, but it costs £240 (about $403, AU$435), and HP's Pavilion TouchSmart 15-n070sa costs a comparatively stratospheric £350 (about $589, AU$634).The Lenovo doesn't look like such an affordable portable. The matte plastic exterior is subtle, and the metal-effect logo along with the green dotted power button look smart. It's plain, but it's not nasty.The B50 trades blows with rivals in terms of its dimensions, too: the 2.15kg weight (about 4.7 pounds) is less than both competitors, and the B50's 25mm-thick (about 0.98 inches) body sits between the thinner HP and chunkier Toshiba. It's thin and light enough to carry day-to-day, although we'd always use a protective sleeve ? the plastic looks smart, but it's flimsier than the HP and Toshiba laptops.Impressive ergonomicsDespite the low price, Lenovo has included a good keyboard. It's a Scrabble-tile unit with a numberpad and a sensible layout, and it's comfortable to use ? the keys have good travel, and their action is responsive and soft. It's as good as anything else we've typed on at this price, including the Toshiba.