Used one of these keyboards for a while now and was looking for a spare, tried looking on amazon etc but they are no longer avaliable or more expensive.
Save on postage if you live in the Dundee area and buy from the shop.
From the website,
Discover superior comfort and control with this ergonomic keyboard and high definition mouse value pack. The Microsoft Natural Ergonomic Keyboard series has an improved split design allowing natural hand and arm placement. Add the comfort and control of the Microsoft Comfort Optical Mouse, with High Definition Optical Technology, Magnifier and Tilt Wheel and you have superior comfort, performance and productivity.
Spill-resistant design - Don\'t worry about liquids near your desktop-this keyboard is designed to withstand accidental spills
Ultra-thin profile keys - The sleek, notebook-like keys feel comfortable and look great
Comfort Curve keyboard design - If you prefer a flat keyboard, let this ergonomic design help your hands rest in a more natural position
Cutting-edge design - Improve your performance as you keep current with the very latest technolog Microsoft has to offer
Space Saving Design