Printer ink is expensive. We know it. We don't even like buying inkjet cartridges for our own office. But if you're needing a reliable cartridge that won't break the bank, we have this highly reliable compatible HP C2P23AN (HP 934XL) black inkjet cartridge for you.
HP Officejet 6220, 6230; Officejet Pro 6820, 6830
(HP 934XL) – Inkjet Cartridge, Black (High Yield)