Can you recommend an inexpensive black and white Duplex laser printer?

Question

If the printer has networking capabilities in addition to duplexing, even better!

Answer 1

I believe Brother do a model that's low cost but has option for duplex, also networking can be added with an external network to USB printer sserver if not available internally.

However if you planto run printer a long time, the HP range are worth looking at, after all the Laserjet 4 nearly cost the Co it's future, too reliable, no one replaced them for years.