I had purchased 4 901XL replacements cartridges fro 1ink.com, 2 worked ok but not great, the 3rd and 4th cartridges did not print at all.
After insisting they refund my money they gave me a return Authorization #.
I send the two cartridges back to them and never heard back.
I called today and gave them the Return Auth. # and they said both returned...