Recycle your empty - 18C0034 Black No. 34 HY ink cartridge - InkRecycling.org
Amazon.com: DoorStepInk Remanufactured in The USA Ink Cartridge Replacements for Lexmark 34 & 35 18C0034 Black 18C0035 Color Combo Pack for P Series P4330 P4350 X Series X2500 X2530 Z Series Z1300