£1 = small to average ground floor window (or door)
£1.50 = big ground floor window
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£1.50 = small to average 1st floor window
£2 = big 1st floor window
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£2 = small to average 2nd floor window
£2.50 = big 2nd floor window
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dont do 3rd floor yet but im sure you can guess what i wouyld price for those