Canon PGI-5 BK 2-Pack Pigment Black Ink Tanks

As advertised and quickly shipped! Be sure to go with the 2-pack on the PGI-5 ink since my Canon MP530 eats them 3-4 times faster than the other
cartridges.

I usually purchase this ink for my Canon printer from Amazon.com because with the free shipping it is a better deal than I can get anywhere else and I don't have to drive somewhere to get it.

This, of course, is Canon's own ink so it's the best choice for their printers and this is the best price I could find on the web for this complete package of actual Canon colors.

Easy to use. Too bad they are not recyclable.
Ken Irons

...and it does the job it's supposed to do. I let the old cartridge go a long time after it first told me it needed replacing - and I'm glad did. Eventually, it stopped printing with a much sterner warning and that's when I finally replaced the cartridge.
It's a little unnerving when the people who make a living selling new ink cartridges are the ones who decide when the old one is empty. And, to be honest, the old one looked like it still had more ink in it - but what can you do? I still question how running out of ink completely can "damage the printer" and "void the warranty".