Page yield: All ink and toner cartridges have a page-yield spec that indicates how many pages the cartridge can print before it runs dry. This spec used to be all over the map, but ISO/IEC industry standards have helped make most cartridges' page yields directly comparable. That said, your mileage will vary depending on what you print and how much you print. Related:

Starter-size cartridges: Some low-end laser and LED printers ship with "starter-size" toner cartridges that have a lower page yield than the usual sizes (and are not for sale otherwise). The starter-size cartridge will run out faster than a standard-size cartridge will, forcing you to buy a replacement sooner. Related: