Hello Curious. Epson uses ISO/IEC 24711 tests to determine page yield. Please note that your results can vary based on print settings, image size, paper type, etc. A new set of standard capacity T822 ink cartridges can print approximately 350 Black or 240 Color ISO pages. Alternatively, with a new set of T212XL ink cartridges, you can expect to print approximately 1,100 Black and 1,100 Color ISO pages. Please visit our official Epson Support page for more details. Regards, Kevin - The Epson Team.