You may be interested in my experience with a Canon Pixma iP4500 printer. This had been working perfectly for some years, giving excellent results. A few weeks ago it stopped printing with an error message saying that it needed servicing.
I contacted Canon, which advised that the ink absorber was full and would have to be replaced, and this could be done at a small cost. This small cost turned out to be £39.50 plus materials plus carriage plus VAT, which meant that the cost of repair exceeded the value of the printer.
I again contacted Canon for advice on how to replace or clean the ink absorber and was told that this could not be done by the customer “for health and safety reasons”.
I had a perfectly good printer, which required an apparently simply service and now have a useless piece of junk. Bert Poole
Looking around, it appears as though the job is fiddly, rather than complex, although it’s comparatively hard to get the right parts. Unfortunately, printers are often sold cheaply, with manufacturers making money from selling ink later. It’s extremely wasteful, but in this situation a new printer with a new warranty makes more sense.