a member of a local forum on our country has used more than a liter of black ink on a single black cartridge (PG-830) using a CIS on his ip1880...Smile said:The only problem with CL-41 is that it will last for as many as (10 to 15 refills) 1500-2000 pages, then it begin to have problems. It can't however to be cleaned easily and the problem rises because of physical contaminant or burned nozzles (these cartridges does not have aluminum heat spreader).
If you only print on glossy photopaper your cartridge can last longer
IF you disassemble the cartridge to clean it save the effort because the ink filter ports are flat (you can't attach a syringe to them and instead of round they are rectangular impossible to fit anything easily).
You can try to drill a hole in the side plug the vent hole and with enough pressure clean the nozzles, but that method proved to be ineffective.
So for high volume if you can call 2000 pages high volume it is a very bad choice. It can print photos fine but I'd choose printer with non buil-in head and separate ink tanks.