The inkjet printer represents one of the worst business models ever devised. They sell the things for practically nothing. “What?” you think. “I can buy a printer for less than a hundred dollars?” Then you discover that the cartridges cost twenty-five to thirty dollars each, and that they wear out all the time, so that you’ll pay for the printer several times over within a year or two.
Not only that. They make a slightly different cartridge for each series of models, so that you can’t interchange them. If you had a stash left over from your old printer, too bad. They design them to be hard to refill — with most types you actually have to use a drill. If you do refill anyway, the cartridge won’t send the proper signal back to your computer, so the control mechanism gets thrown off.