It can be very useful to have a printer in your office that produces pages larger than A4. The most obvious use is if you're producing an A4 newsletter, where you can print page spreads in one job and fold them down. If the printer can duplex pages, it makes it even simpler.

Nearly £900 for a mono laser printer seems expensive, even for an A3 model, but its high ticket price is mitigated by low running costs.