I have two (refilled) ink cartridges for a brother TN450 printer. 1 cartridge is next to new and the other is brand new. My printer went on the fritz, and I wondered if maybe my problems were because of a defective cartridge, so i added a new one to fix the problem. Turns out it was a printer problem and not a cartridge problem. Cartridges are still full and good for use. Paid $90 for 1 new one at staples.