Estimating the resale price of a second-hand item, from one photo
Want to know what an item is worth before you sell it — or before you buy it? Postfast identifies it from a single photo and estimates its second-hand resale value, with links to real sales so you can check for yourself.
How Postfast estimates resale value
No need to trawl through listings for an hour to find out what your item is worth. You take one photo or several, and Postfast handles the rest in seconds.
You photograph the item
A video game, a pair of trainers, a whole job lot laid out on a table. The AI reads what it sees, even when several items appear in the same photo.
The AI recognises the product
Brand, model, edition: Postfast names the item and works out its category to sharpen the resale estimate.
A price range, not a magic number
The estimate cross-checks the AI analysis with eBay comparables (live listings on the French second-hand market) to land on a realistic range.
You check against real sales
Postfast shows direct links to sales on eBay, Vinted and Leboncoin so you can confirm the price yourself. The estimate is a solid starting point, not a guaranteed truth.
What makes a second-hand item's value move
Two identical items can sell for twice as much as each other. Four factors weigh heaviest on the resale price:
- Condition — an item that is new and sealed, complete and unscratched is worth far more than a damaged or incomplete one.
- Completeness — box, manual, accessories, original cables: every missing piece pulls the value down.
- Rarity — a limited edition, a discontinued model, an out-of-print run: what can no longer be found costs more.
- Demand — a sought-after product goes fast and goes high; a common item gets haggled down.
A price is checked, not guessed.
Postfast gives you a reliable base and the right links, but the last word belongs to the real market of the day. Always look at recent sales before you set your price.
Valuing a job lot, item by item
Back from a car boot sale or a flea market with a whole box? Photograph the lot: Postfast identifies each item separately and estimates the value of each one. You know straight away what has value and what does not — handy for deciding whether to sell everything as one bundle or to split out the pieces that are worth most on their own.
The purchase cost of the lot is then split in proportion to the value of each item, which gives you a fair margin from the very first sale rather than a misleading equal split.
Resale prices, category by category
Some categories have a stable, well-documented going rate: value estimates are particularly accurate there.
Video games
Retro or recent, complete or loose: the going rate swings hard on the state of the box and the manual. Postfast reads the title and estimates each game.
Lego
Sets retired from the catalogue gain value over time. The set number and completeness make all the difference.
Consoles
PlayStation, Nintendo, Xbox… the condition, the model and the original accessories set the resale price.
Cameras
Bodies and lenses hold their value well on the second-hand market. The exact model reference guides the estimate.
Vinyl
Pressing, edition and sleeve condition send a second-hand record's value up or down.
Books
First editions, illustrated books, out-of-print titles: the resale price depends on the edition and on rarity.
Valuing an item BEFORE you buy it
Buying mode flips the logic round: before you get your wallet out at a car boot sale or a consignment shop, photograph the item. Postfast estimates its resale value and shows you the potential margin against the price you are being asked.
You set a target margin and the app tells you the maximum purchase price not to go beyond to reach it. Enough to size up an item before buying and to haggle with a number in hand rather than on gut feel.
Honesty first.
Postfast does not tell you what to buy, or where the bargains are. It gives you the market data so you can decide for yourself, with your eyes open. The call stays yours.
Once the item is bought and sold on, find your real net margin and ROI in the tracking. And if you buy in volume, see how Postfast fits the professional reseller and the consignment shop.
Frequently asked questions
How do I find out what my second-hand item is worth?
Photograph the item in Postfast: the AI identifies it (brand, model, edition) and gives a resale value range, cross-checked against eBay comparables from the French market. The app also gives you links to sales on eBay, Vinted and Leboncoin so you can check the real price before making up your mind.
Is the Postfast price estimate reliable?
It is a solid estimate, not a guarantee. It draws on the AI analysis and on real listings to give you a realistic starting point. The final price always depends on the exact condition, on completeness and on demand right now — which is why Postfast shows links to real sales, so you can confirm it yourself.
Can I value a whole job lot in one go?
Yes. Photograph the whole lot and Postfast identifies each item separately, with its estimated value. The purchase cost is split in proportion to the value of each item, so you can decide what to sell as a bundle and what to sell individually, and know your margin from the start.
Can Postfast value an item before I buy it?
Yes, that is what Buying mode is for. Photograph the item at a car boot sale or a consignment shop: the app estimates its resale value and works out the maximum purchase price not to go beyond if you want to hit your target margin. Postfast does not tell you what to buy; it gives you the market data so you can decide with your eyes open.
Which categories are estimated best?
The categories with a stable, well-documented going rate: video games, Lego, consoles, cameras, vinyl and books. For these, photo identification and eBay comparables give a particularly accurate estimate. More unusual items can still be estimated, but the app will nudge you to check through the links to real sales.
Read next.
Hunting at car boot sales & flea markets · Working out your margin & ROI · Managing stock as a professional reseller
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