Go second hand?
You can pick up some nice ex office printers which have a low page count. Mine was from a doctors sugery, only had a 3K page count. HP1320DN (Duplex, networking) I bought a second tray for it as well. One of the reasons I chose that model. It was £79 inc delivery. Nice and fast as well! Thoughthat is a black laser, and do you really need colour?