Review on 🖨️ Valuetoner Compatible Toner Cartridge for Canon 128 CRG-128 Printer (Black, 4 Pack) - Suitable for ImageCLASS D530 D550 MF4570dw MF4770n MF4880dw MF4890dw MF4450 MF4420n FaxPhone L190 L100 by Tom Herman

I didn't count the copies but they usually last 4-6 weeks with 4 cartridges. We have a busy office and print a lot of documents every day, that's around 4,000 pages a month. The print quality is excellent and for the price you can't beat it. When you consider that a brand new toner cartridge can cost twice as much as 4 of them, that's a lot.