I did something similar last summer - I purchased an HP LaserJet 4050 with all the options - extra tray, duplexer, network card, and toner. It cost me about $35. The toner has been at less than 20% for a year now, even with 4 people printing to it daily. Everyone loves being able to print to it, and not have to screw around with the Epson inkjets we used to have.

Congrats on a great conquest!