The HP 305XL High Yield Black Ink Cartridge (240 Pages) (3YM62AE) is compatible with HP Instant Ink, so rather than paying for a new cartridge each time you run out, you could save up to 70% on genuine HP ink with a low-cost printing plan! An Instant Ink monthly printing plan is based on the number of pages you print rather than the amount of ink you use and can be changed online to suit your needs at any time. The service is completely automated too, so whenever you\'re running low on ink, your printer will notify HP and new cartridges are sent directly to your door. All that\'s left for you to do is sit back and enjoy an easier, more affordable way to print!