We are sorry to hear that you are unhappy with your purchase of the Brother TN-450 toner cartridge and we'd like to help. The Brother TN-450 toner cartridge yields approximately 2,600 pages based on the ISO/IEC 19752 testing standards. The number of pages that can be printed with a cartridge is affected by several factors, including paper size, number of pages per print job, amount of print on each page, font size, and print content. Print jobs with large text fonts, graphics, charts, and/or large amount of solid coverage will use much more toner and, naturally, will shorten the life of the toner cartridge. If you feel that you have printed less pages than advertised, feel free to contact Brother Customer Service directly at https://www.brother-usa.com/support