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Since I wrote and didn't hear back from the seller, I'll post my response here: "I had a bad experience with the sets of cartridges I received. It took an hour of fiddling, cleaning, reinserting, retesting to get all the colors and the black to print.
Even then, the black still is ‘blurry’ and perhaps being overdelivered to the paper.
It would be very difficult for me to recommend the Imagetech products much less buy them again.
I’m a very experienced computer/printer repair technician, so please understand that this is a response with years of knowledge to back it up.