You ticked low price and no upkeep. You left wood look unticked. Here's what speaks for each option, and our verdict.
£450 per 120 × 150 cm window, so nearly half the price.
They just need a wash and insulate to a U-value of 0.9.
Lifespan 30–40 years.
£850, but they last 40–60 years.
They look natural on an old house.
A new coat of paint every 8–10 years.
Verdict“uPVC for you. You save money and there's nothing to paint.”