How do you spot stock that is gathering dust in your resale business?

Published on 2026-11-07, Resell-io

What counts as dead stock in second-hand reselling?

Dead stock is an item that has sold much more slowly than the rest of your inventory, or has not sold at all, even though it is listed. There is no universal number of days, because a wool coat in July behaves very differently from a T-shirt in May.

It matters because every unsold item holds the money you paid for it, takes up space at home and costs you time each time you handle it again. A small reseller feels this quickly: cash tied up in dozens of slow items is cash you cannot spend on better finds.

Slow is not the same as dead. A seasonal item waiting for its season is slow on purpose. A dead item is one where nothing is changing: no new views, no offers and no reason to expect a sale unless you do something.

How long should an item stay unsold before you act?

Act when an item has been listed noticeably longer than the usual sale time for its category in your own history. The right limit is yours to set, because it depends on what you sell, where you sell it and at what price.

To find your limit, you need three dates for every item: the day you bought it, the day you listed it and the day it sold. Without them, you can only guess. With them, the method is simple.

• Pick a category, for example denim jackets or children's coats.
• List the last items you sold in it and note the number of days between listing and sale.
• Take a typical figure, not your single fastest sale, and add a margin to get your review limit.
• Write the limit down and apply it to every unsold item in that category.
• Adjust the limit for seasonal items by counting from the start of their season, not from the listing date.

Which signals show that an item is stuck and not just slow?

An item is stuck when its age is past your limit and the listing shows no sign of interest. Age alone is not enough: an item can be old and still receive offers, which means the price is close to right.

Look at the following signals together before you decide anything.

• Few views or favourites compared with your other listings in the same category.
• No offers, or only offers far below your floor price.
• A price clearly above comparable items that have actually sold, not just items currently listed.
• Weak photos: dark, cluttered, or missing a view of the label, the flaws or the fit.
• A title that leaves out the words a buyer would type, such as brand, size, material or colour.
• A platform that does not suit the item: a vintage piece may find its buyer elsewhere than a fast-fashion piece.
• An unusual size or a very narrow niche, which simply needs more time or a different audience.

What should you do with an item that has stopped selling?

Work through the options in a fixed order, from the cheapest to the most drastic, and give each one a short test period. Changing everything at once tells you nothing about what worked.

Start with the listing itself, because it costs nothing: new photos, a clearer title, a more complete description. Then look at the price, using sold items as your reference. If you lower it, do so in steps rather than in one large cut, so that you do not give away margin you could have kept.

Resell-io's Expert plan includes scheduled price drops and planned relisting, which suits this step-by-step approach: you set the pattern once and the software applies it item by item. Relisting rules differ between marketplaces, so check each platform's own conditions before refreshing a listing.

• Fix the listing: photos, title, description, size and condition details.
• Adjust the price in small steps, checking comparable sold items.
• Relist the item so that it appears again in front of buyers, within the platform's rules.
• Try another channel: an item that is ignored on one marketplace may sell on another or in your own shop.
• Bundle it with a related item at a combined price.
• Clear it: sell at a low price, donate it, or write it off, and note the cost in your books.

How do you stop dead stock from building up in the first place?

Prevent it at the till: decide the most you will pay before you buy, based on the likely resale price and your costs. An item bought too dear is almost always the one that stays unsold, because you resist lowering the price below what you paid.

Resell-io calculates a maximum buy price for each find and shows what actually sells and the price by platform, so your buying follows your results rather than your impressions. If you prefer to start by hand, the free margin calculator at https://resell-io.com/calculateur-marge-revente lets you test a purchase against its expected profit.

Keep a short weekly routine as well: open the list of items past their age limit, apply the steps above to a handful of them, and note which categories keep reappearing. If the same type of item keeps going stale, stop buying it. For the accounting treatment of items you write off, check the official guidance of your tax authority or ask an accountant.