Discounts are modest, usually around 15% off the original retail price.

The Apple Certified Refurbished Store remains the gold standard for those who want a device that is functionally indistinguishable from new.

Sellers must perform a 100-point inspection covering battery health (guaranteed at 80% or higher), ports, and screen visuals.

Best-in-class refurbishment. Up to 100-point quality inspection. Free 30-day returns. 1-year warranty. www.backmarket.co.uk

It offers different cosmetic tiers (Premium, Excellent, Good, Acceptable) to fit various budgets.