The longevity of Hp ink and toner cartridges majorly depends on how frequently it is used. For instance, if you use HP cartridges Ink Toner for official purposes, like for printing newsletter, mass-mailers, sales flyers, etc., then you can enjoy high-yield cartridges with fewer replacements. And, if you use a HP inkjet printer at your home for your regular assignments or for printing few forms in black and white, then a standard yield of the cartridges should last long.