I have a Cannon MP560. I pay 20 bucks for a cartridge of black ink only.
My printer tried to give me error messages that the other tanks were out and it wouldn't print because of the error, but i found a way to bypass it online by holding the stop or print button , i cannot remember which atm. But yeah, haven't filled those other tanks in a while and it works.
But I've gotta admit, the tank doesn't last long. At all. I'm already looking at buying a lazerjet because of how quickly the ink dries up. I don't feel im getting my moneys worth on printing.
My opinions and time are all my own.