Poor use/price ratio
All these cartridges are overpriced for the time they are used. A litre of ink is the price of a diamond. I am a member of the HOP association (Halt to Programmed Obsolescence) which has been denouncing this phenomenon for several years. The manufacturers have also locked the system so that recycled cartridges cannot be used.
If we take into account the ratio of programmed obsolescence of printers (either because the equipment self-destructs or because the cartridges are no longer sold) with the price of cartridges, we discover a real scandal.
Unfortunately, I am a prisoner of the system because I need a printer.
You could help everyone by putting pressure on the manufacturers.
Kind regards.