That was interesting. I bought some large bottles of ink about 7/8 years ago when a shop was selling up. Am still using them to refill cartridges that came with Canon MP510, never had a problem so far.
Many years ago i tried re-filling and using remaufactured cartridges on an Epson printer with no luck at all,since then i got got an HP printer again tried compatable cartridges total rubbish,i now stick to makers own brand.Mind you i'm lucky my buisness means i can claim cost back from my employer.
I have been using compatibles in a whole range of printers for the past 10 years and apart from a couple of duds I have had not problem with any of them. I usually buy from Inkredible.
I have attempted refilling but found it messy and inconvenient as I can never seal them as well as the re-manufacturers, consequently they either leak or dry out before I get to use them and I don't have time to do a refill myself when I am in the middle of a print job.
I was very reluctant initially, to use 3rd party stuff, but over the years (many of ‘em) I’ve gradually got used to it. I have never had a problem - nor know anyone else that has.
I’m sure that some brands are great,, and like other things,, some makes a carp !
I also collect the ink from – so called – ‘empty’ cartridges, and inject it into the next one.
But BEWARE: If you are considering doing that to save some bucks - not all brands are compatible.
When I recently added some ink to a new one, it turned the ink into a thick paste, and unusable. Obviously, they don’t all mix well. This was the first time it happened, but I have made a mental note to use ‘like with like’, just to get around the compatibility issue.
Mind you - I would have thought that a very slight modification to the base of the cartridges would enable the user to get 99.9% of the ink, instead of throwing it away.