PVC window prices result from many factors. A standard white reference window (1230×1480 mm) costs from £800 to £1,150, or from £1,050 to £1,450 with professional installation. Choosing a triple-glazed unit adds £180-200, whilst popular anthracite foil increases the price by approximately 20% (one-sided) or 40% (both sides). The final cost depends on dimensions, chosen profile system, glazing unit, colour, and additions such as anti-burglary hardware. Remember, it’s an investment that quickly pays for itself through real heating savings.