The purchase decision for the Epson AcuLaser C 1700 fell due to this replacement toner. The price was convincing, now can the quality be assessed. Amazon order and two days later is the replacement in the house. Pull out the old toner cartridge, insert new - is immediately recognized - done. It's that simple. When print quality is no difference should be noted. However, nothing can yet be said about the number of pages. The usually weaker filled original initial has held about 700 pages. How can I otherwise than by five stars recommend?