I am not at all satisfied with the resource of these cartridges. I bought in January 2018, my HP4240 says it needs a new cartridge. I didn't print anywhere near the 440 sheets that were supposed to be printed. I printed maybe 40 to 50 sheets of color pages. I usually print in grayscale whenever possible to save color ink. These are high quality HP inks, but $55.89 for 50 pages isn't that much!
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