Is it worth selling second-hand LEGO

Yes, if you can name the set and describe it honestly. Second-hand LEGO holds its value better than most toys, because collectors want specific set numbers and the parts stay useful. It is not automatic profit. A complete retired set is often worth the time. A tub of mixed common bricks may only be worth it if you sell locally and skip postage. The question is whether the price you can get is worth the sorting, the photos, and the trip to the Post Office.

On Brick Deals you keep the price you set. Listing is free. The buyer pays Royal Mail postage and a 5% Buyer Protection fee on the item, so those costs are not deducted from your payout. That changes the maths compared with a site that takes a cut of the sale and of the postage. Check the fees against the estimate on the homepage before you decide.

Retired sets are the ones people search for, because the shop no longer sells them. Large licensed sets, Ultimate Collector style builds, Technic supercars, and display sets attract buyers who already know the set number. A sealed box is worth more than a built set, but a built set with no missing parts is still a normal listing, not a leftover. Instructions and minifigures are what make a used set feel complete.

Small, current sets that are still discounted in supermarkets are harder. The buyer can buy a new one, so your used copy has to be cheaper than today's offer, and postage can swallow the gap. If the set is worth less than the cost and effort of a tracked parcel, sell it locally or group it with other sets. Look at City and similar themes on the marketplace to see real asking prices.

A mixed box of unknown bricks, with no minifigures and no way to rebuild a set, takes hours to sort and may sell for a few pounds a kilo. That can still be worth doing if the alternative is the bin, but do not expect a retired-set price. Non-LEGO bricks mixed in reduce the value further, and buyers will say so. Dirty bricks, heavy yellowing, and damaged electrics need an honest condition or they come back as a dispute.

Parting a set into individual pieces can add up to more than the set price on paper. In practice it means dozens of listings, many envelopes, and months of waiting. Most people selling one collection should sell complete sets first, then minifigures, then leftover bricks. Read how to sell loose bricks before you tip a built set into a tub.

Selling is worth it when the listing answers the buyer's question in one reading: which set, which condition, what is included, and what it costs. The seller guide is the short version of that process. If the set is incomplete or missing its box, those sales are still normal. They are covered in the FAQs on incomplete sets and selling without the box.

• Find the set number and run it through the homepage checker.
• Subtract nothing for Brick Deals seller fees, because the item price is yours. Do subtract your time and any packaging you have to buy.
• If the set is incomplete, price the missing parts before you call it complete.
• If postage would cost more than the set, choose local collection or a combined parcel.
• If you want it gone this week and will take less, a buyback quote is the low-effort option. A marketplace is the better price.