The salesman at Best Buy encouraged me to sign up for the free ink trial where HP tracks and sends ink as needed. However, when the period ends in 6 months if you haven't used the cartridges up they no longer work. Even if you have a new one not opened. This plan only useful if you make lots of copies which I said I did not and he encouraged it anyway. Now I have to sign up for monthly fee extension or go buy a different cartridge and throw mine away! Totally wasteful and environmentally bad! Also false advertisement from Best Buy. I am still using the original cartridge.