Reduced from £16 to £4.97 instore at Asda Huyton - doesn't look store specific and had several in stock.
The riser elevates your notebook display so you’ll sit taller, with your head up and eyes forward—a more natural, comfortable position. Three tilt angles—20, 30, or 40 degrees—and a rubber-soled swivel base let you select the position that works best for you. The folding design makes it easy to set up, take with you, and put away.
You can use the stand with your favorite external keyboard and mouse and arrange each component to maximize your comfort and reduce fatigue.http://www.logitech.com/en-gb/notebook-products/stands/devices/5494