I have bought many of these over the years, but lately they do not seem to have much ink in them. Several only lasted a couple weeks. I am keeping better track of the usage now. I wrote Monoprice last week about it, but no response from them.
Well, it worked fine at first. Then, we noticed that the first couple of uses per day, some lines of printing were extremely light of missed entirely. So now we're balancing the savings of the ink vs. paper lost to misprinting. Our first cartridge from Monoprice, maybe we got a bad one. Not sure if we'll order again in the future. When it worked, it was AWESOME. Now, not so much.