New or used metal detector: which should you buy?

Start with the whole cost

A second-hand listing may look inexpensive until you add a replacement coil, charger, headphones, worn shaft clamp and transport. Compare it with the current new price of a similar supported model, not the seller's recollection of what they paid. For an inland beginner, a new Nokta SIMPLEX Lite offers a known current model, full-detector waterproof rating and manufacturer support to benchmark against. It is not automatically the best purchase; it clarifies what the used saving must compensate for.

Our best used metal detectors guide names models worth inspecting, while the under-£200 guide shows why a new starter can sometimes narrow the gap. Prices move, so use the current listing at the moment you buy.

What new buys you

The advantage is a known starting condition, supplied accessories, current manual and a clearer route if something arrives faulty. But “new” does not make a machine suitable: a waterproof coil is not a submersible control box, and a complex interface can make a first week frustrating. Compare the recipient's ground and learning style using our beginner detector guide.

The maker's warranty terms and registration rules should be read for the exact model and UK seller. Do not assume a warranty transfers with a privately sold detector. Statutory consumer rights and manufacturer warranties are different things; keep the retailer invoice and serial number.

What to test on a used detector

Ask for the precise model, serial number, original purchase proof if available, all included coils and the reason for sale. Inspect the coil for cracks, worn ears and damaged cover; follow the cable to the connector for crushed or repaired sections. Check shaft locks, arm cup, buttons, headphone socket, charging port and battery compartment. A swollen rechargeable battery, corrosion or DIY wiring is a reason to walk away.

Turn the machine on with its actual coil attached. Check the display, buttons, audio, pinpoint function and several known metal objects at modest sensitivity, away from electrical clutter. An air test proves only that the detector responds; it cannot prove field depth or stability. If possible, test on ground similar to your intended use with permission. Ask whether firmware is current, but never install an update during a rushed handover.

For a detector advertised as waterproof, inspect seals and connector threads and ask about salt-water history. You cannot reliably certify an old seal by looking at it. Treat “never leaked” as a seller statement, not a pressure test; if water use is essential, a new machine or authorised service may be worth the premium. The coil cable guide shows symptoms to watch for.

The seller changes your remedy

Ask whether you are buying from a trader or a private individual, including on a marketplace. UK government second-hand product guidance advises checking instructions, modifications and recalls. Consumer remedies differ between trader and private sales, and a private listing should not be treated as a retailer guarantee. Read the platform rules and retain the description and messages. If the seller will not identify the machine or demonstrate it functioning, pass.

Whichever route you choose, reserve money for appropriate recovery kit and permissions. A cheap detector you cannot use safely or repair is poor value; a carefully checked used detector can be entirely sensible when its condition and saving are real.