Lexmark High Yield cartridges provide up to 8,000 pages from a single cartridge, and this black cartridge ensures crisp text and lines on your prints. And with their new Return Programme, all this can be yours at a much cheaper price. All you have to do is return the cartridge once it has been finished so that it can be recycled or remanufactured by Lexmark. So not only are you being thrifty and saving yourself a few quid, you're also choosing to make less of an impact on the world's resources.