I love these toners. I bought these, and then bought the namebrand that goes with my printer, they didn't work, so I bought these again and now it works. I recommend them, they are cheap, print great and shipped really fast.
PROS: 1. Way cheaper than OEM's for sure but also cheaper than other competing vendor ink products of same model 2. Monoprice is a reliable vendor of good products, gives me confidence in what I purchase from them 3. Ink itself seem to have matched the OEM's (however, I did not do any scientific step by step comparison this was just an experiential observation)
I ordered this because it was cheap. It worked for the test print sheet, then I turned the printer off. When I turned it back on to print a day later, they couldn't be recognized by the printer (Epson NX510). Do yourself a favor and save the headache (and your wife's disappointment) and buy name brand.