Hello Mitch. The average cost per page will vary considerably based on ink bottle pricing, print tasks, print volumes, and usage conditions. Epson uses ISO/IEC 24711 tests to determine page yield. A new set of Epson T822 ink cartridges can print approximately 350 Black or 240 Color ISO pages. With a new set of larger capacity cartridges like the Epson T822XL, you can print approximately 1,100 Black or 1,100 Color ISO pages. Regards, Kevin - The Epson Team.