Buy a laser printer for sure, but before you do shop online for replacement toner cartridges, because they likely cost more than the printer itself. Buy a printer for which you can buy cheap toner. Even if you don't print much (like me) it's still more expensive than the machine itself.

I've had a black and white Brothers for longer than I can remember, maybe 10 years. Toner was cheap, still is. It still works, duplex, wireless, no problem. Very happy with it, obviously.