What sells best second-hand

Why is there no single best item to resell?

The lists that go round rank objects. It is reassuring and it is wrong: the same item is a good buy at one price and a bad one at another, in one season and not the next, in the hands of someone who can identify it and not someone who cannot.

What ranks is not the object but the conditions it resells in. Once you understand those, the list matters less, and above all it stops being a closed list: you can judge an item no page has ever mentioned.

Which five criteria decide?

1. Steady demand, not a trend. A straight-leg pair of jeans is searched for all year, every year. A viral piece is searched for six weeks. The second can pay more, but you have to buy and sell inside the window, which is a different job.
2. Does the item say what it is? A model name on a tongue, a reference on a label, a hallmark: that is what makes a listing findable and a price defensible. A silent item asks the buyer to take your word for it.
3. Postage against price. The most underrated criterion and the one that ruins the most margins. A bulky, cheap item loses money even when it sells.
4. Tolerance for wear. Some categories resell worn and scuffed; others only sell near-perfect. That decides what you can pick up without inspecting every seam.
5. Season. The same coat is worth two different things in September and in April. Buying out of season is the simplest way to improve a margin, if you have room to store.

Which categories tick the most boxes?

From the most forgiving to the most demanding:

• Outerwear and everyday clothing. The safest place to start: steady demand, readable brands, predictable seasons. Coats, jackets, jeans, dresses.
• Shoes. A model name is almost always written on them, and the size filters buyers without any discussion.
• Bags and leather goods. High value for a small parcel, so postage barely matters. Counterfeits are everywhere, though.
• Toys and children's things. Buyers who come back constantly and accept signs of use.
• Collectables. The best-informed buyers on the market: they know the value better than you, which makes pricing easy and mistakes costly.
• Sport and outdoor. Strong seasons and often heavy postage, but very recognisable brands.
• Technical kit. The best margins in the list, and the only area where an item can be unsellable for a reason you cannot see when you buy it.

What sells badly, and why?

This list never appears on pages ranking "the best things to resell". It is more useful: failed starts almost always come from stock bought here.

• Clothes with no readable brand. No way to make them findable, no way to defend the price, whatever their quality.
• Bulky, low-value items. Postage swallows the margin, and collection-only limits you to buyers twenty minutes away.
• Fragile things: crockery, glass, lamps. They sell, but one broken parcel cancels several good sales.
• Electronics you cannot test. Buying without plugging in is buying a lottery ticket, and the return arrives after the money is spent.
• Dated but not old. The last fifteen to twenty-five years are the low point: too recent to be vintage, too old to be wanted.

How do you judge an item no list mentions?

Four questions, in this order, are enough at a stall with no signal:

If the first answer is no, the rest does not matter. The last question is the one people ask last, and it is the one that decides.

Why does speed of sale change the ranking?

An item can tick every box and still be a poor buy, because "does it resell?" hides a second question: how fast?

Two pieces bought and sold at the same prices are not worth the same if one goes in ten days and the other in five months. The first frees cash and space and lets you buy again several times in between. Resellers who start measuring often switch from the categories with impressive margins to quieter ones that sell steadily.

A tool for this: Estimating a resale price