http://www.morfon.com/pixma-mx850/

A way to find out how many pages I get per ink cartridge?
I have a Canon Pixma MX850 and I would love to find out how many pages I get per ink cartridge. I’m trying to decide if its cheaper for me to go to Kinkos to print out b&w pages or if I should just keep printing large docs at home.
Here are the page yield guides for the Canon inks which go in your MX850.
PGI-5BK 505 Pages
CLI-8BK 5025 Pages
CLI-8C 890 Pages
CLI-8M 665 Pages
CLI-8Y 710 Pages
Part two Ciss continuous ink install for Canon MX850