Active job

Replacement of window - or double glazing retrofit

I have a timber bedroom window with four panes of glass (each approx 80cm by 65.5cm). One pane is cracked and needs replacing. I would like an estimated cost to get the one broken pane replaced with single layer glass, but also an estimate for how much it would cost to get the all four window panes retrofitted with double glazing. The full window including timber frame is approx 1.45m by 1.8m. Because of the cracked window I need to make a decision soon as to whether to replace that one pane only or invest more money into replacing the full window.