In addition to Brother, Ecotank style printers (printers that refill from ink bottles instead of cartridges) are pretty good even if they come from usually shittier printer companies. The ink is extremely cheap and there’s no way to prevent people from using different brands of ink bottles.

You have to pay more up front for the printer, but that’s because they’re sold with the idea that the printer company makes its money upfront instead of overcharging you for ink later.