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Quality Fixated
I'm yet to be turned on the subject of refilling, or even 3rd party cartridges, previous bad experiences my reason.
Plus the hassle, printer saying it has a non compatible cartridge, or constantly warning the ink is empty. 3rd party cartridges not producing the colours or quality that you get with a rather expensive but original manufacturer cartridge.
I recently had a go at the HP Instant Ink programme which I found rather good, at least if the ink evaporates out of the cartridge, they will have to replace it. But the printers the programme is acceptable with is limited, and the printer I had replaced twice had an inherent fault I just could not put up with.