Are these really “used once” Canon cartridges as the description says? I have my doubts since the genuine Canon ones use black plastic and are opaque. Third parties that make compatible cartridges (such as the house-brand ones sold at large office supply stores) use transparent plastic.
Despite the good price, I’d be concerned about the longevity of these products. I’ve had nothing but trouble when I used third-party cartridges in my Canon Pixma MG6120.
Does anybody have experience with these?