Because they are no bullshit brand. You get what you pay for. Open the box, put it somewhere, connect to WIFI and forget about it. The moment you need it, it will happily spring to life without complaints and then go back to sleep.
It’s hardly believable how problem-free these printers are. They have a bunch of models, but you always get what you pay for. Laser is this much, a bit more expensive is LAN model, a bit more LAN+WIFI, then higher up scanner added, etc. They also work without drivers on Linux. Company also allows recycled and third party toners. In my case they are even faster to receive data and print than any other printer I’ve had. They even don’t send statistics back home, even though they are network connected.