HP 304 Cartridge Black (N9K06AE)

I printed so little/irregularly and always suffered from dried out ink when I needed a print. The same hassle with the ink every time. Also that I was more or less obliged to install a color cartridge, even though I basically only use black ink, otherwise you can't print. Then the costs become very high at a certain point. Since I have the cheapest plan, I print without worries. HP ensures that I never run out of (dried out) ink and that I can print worry-free, because I also know in advance what it will cost me. And when I need to print out more than my monthly printouts, I can do that for an additional fee. Everything almost goes without saying!