I've just had a quote to replace a very rotten back window - £1300 plus VAT which is for a bespoke window and installation. This seems extortionate to me but maybe I'm behind the times on window costs! It is a 6 pane single glazed soft wood window measuring approx. 26" by 41". Does this quote sound about right to you? I'm in Cambs/North Herts so if you know where I could get an alternative quote I would be very grateful.