I have a HP all in one, and although it is a great printer, I can usually print at least 50 more pages after the machine tells me that the black cartridge is empty! I also use replacement ink cartridges from places like 'The Ink Box' as they are less than half the price of the HP ones and I get just as many pages out of them. The only problem is, the viewing window displays a message on start up telling me that I am not using genuine HP parts and may damage the printer. Load of tosh of course as I have been using them for years with no problems, but just shows how crafty they are in trying to get you to use their inks.