Selling guide

8 common mistakes people make when selling gold online

Eight things that genuinely cost UK sellers money or stress when selling gold online, and the cheap, simple ways to avoid each one.

By Rocco Clayfield, trading as GoldPaid; the business incorporated as GOLDPAID LTD (company 17382540) on 5 August 2026 · Published · updated

What is the most common mistake when selling gold online?Accepting an offer without the working shown. A reputable buyer puts the figure in writing with the confirmed purity, weight, rate and margin. If a buyer will only tell you the figure verbally, or refuses to explain the testing method, walk away. There is no postage cost to comparing a second written offer.

1. Posting without a tracked, signed-for service

Ordinary first-class is not adequate cover for gold. Use Royal Mail Special Delivery Guaranteed (tracked, signed for, with cover that may be available up to £2,500 depending on the postal method and cover level used), or a comparable tracked, signed-for service. The free label GoldPaid arranges is exactly this. The process these mistakes are measured against is documented on the page explaining how selling by post works.

Not sure how any of this applies to your own items? Send us photos on WhatsApp, and we will help you, call 07944 014111 (8am to 9pm, 7 days a week). We can arrange postage after we have spoken. Nothing is posted until you decide, your parcel is tracked and signed for, the written offer follows the XRF assay, the return is free if you decline, and we aim to pay by Faster Payments within one working hour of your acceptance.

2. Not keeping the Post Office receipt

The proof-of-postage receipt is your tracking number and your evidence the parcel entered the network. Without it, a compensation claim becomes extremely difficult. Keep it until you have been paid.

3. Accepting a verbal offer

A buyer who will not put the figure in writing is a buyer to walk away from. A written, itemised offer shows the purity, weight, rate used and figure, the working, and lets you compare or sleep on it.

4. Not photographing items before sending

A quick set of phone photos before packing is free and takes a minute. It is your own record of what was in the parcel, useful for any compensation claim and useful if you later want to check what you actually sent.

5. Writing "gold" or "jewellery" on the outside

Never. Plain packaging is part of keeping the parcel safe in transit. Nothing on the outside should hint at the contents.

6. Selling the wrong thing in the wrong place

A metal-value buyer is right for jewellery and scrap. A specialist coin dealer or watch dealer may be right for a genuinely collectable coin or branded watch. An honest postal buyer will tell you when a specialist is the better home for what you have, rather than buying a collectable as scrap. Our guide to getting the most for your gold lists the pieces worth holding back and why.

7. Comparing per-pennyweight or per-troy-ounce rates without converting

Different buyers quote in different units. Always convert to per-gram before comparing. A "high" per-pennyweight rate may be lower per-gram than a competitor’s per-gram quote, see our weights guide.

8. Selling in a hurry after a loss

Inherited items rarely arrive at a moment when good decisions are easy to make. There is no rush. A reputable postal buyer will not press you: if a dated offer lapses while you think, it is re-run at the day’s rate, and your items come back free of charge if you change your mind. Slow is, here, almost always cheaper than fast.

What to do next

If you want to know what your own pieces are worth, start with a photo rather than a parcel. Send one on WhatsApp and we will tell you plainly what can and cannot be judged from an image. If you go ahead, the items are XRF-tested on arrival and you receive a written offer setting out the purity found, the weight and the rate used. Decline it and the tracked return costs you nothing. Accept it and we aim to pay by Faster Payments within one working hour of your acceptance.

Send a photo on WhatsApp

Common questions

Is it worth posting gold without a tracked, signed-for service?

No. Royal Mail cover may be available up to £2,500 depending on the postal method and cover level used. GoldPaid can confirm the appropriate postal option before you post, and a postal buyer worth using sends the prepaid label free.

How many quotes should I get before selling?

At least one written one. A postal buyer’s written, itemised offer is free to obtain and free to decline, so the bar to comparing is essentially zero.

Can I trust online gold buyers in general?

Some yes, some no, the same as any category. The tells are: explicit testing method (XRF), written itemised offer, free tracked return if you decline, no countdown pressure, transparent company details.

Not the question you had? The full GoldPaid FAQ covers the rest, from postal cover and ID checks to what happens if you decline the offer.

Related guides

Reference pages

Photo first, written offer after testing

Get a written offer, then decide

Send a photo on WhatsApp and ask anything you like. We reply with an idea of what it is worth, and the free Royal Mail Special Delivery label only goes out when you ask for it.

We give rough estimates where possible; your final offer follows inspection. We arrange postage with you after our conversation.

No obligation. Free tracked return if you decline. We aim to pay within one working hour of acceptance.