THE FLIPWORTH GUIDE / RESALE VALUE
FlipWorth is a resale value calculator for second-hand finds. Upload a photo and get an estimate of what your item may be worth on the resale market, informed by relevant marketplace evidence rather than a guess.
Looking for a quick decision before you buy? FlipWorth helps you compare the likely resale price with what you would pay.
01 / FROM PHOTO TO EVIDENCE
An item value checker is most useful when you can see what sits behind the number. FlipWorth brings the identification, market comparison and purchase decision together in four steps.
Take a photo while you are browsing or upload one you already have. A clear view of the item, label and any distinctive details gives FlipWorth more to work with. You can check a find before committing to the purchase, rather than trying to guess its value in the shop.
FlipWorth analyses what it can see, including brand, product type, model, colour, size, condition and distinguishing features. Identification is a starting point, not a guarantee: check the suggested match, especially when a small difference in model or condition can change the resale price.
FlipWorth looks for relevant comparable eBay listings. It checks recent sold listings first when enough reliable sales are available: those prices show what buyers actually paid. If sold evidence is too limited, it uses current active listings as a separate fallback and shows which type of evidence informed the estimate.
Review the estimated resale range alongside the comparable listings, potential profit and ROI. Where applicable, FlipWorth also shows purchase guidance, including a recommended maximum price based on your targets. Inspect the evidence and decide whether the item makes sense for you.
02 / THE PRICE BEHIND THE PRICE
The second hand value of an item is not simply its original price minus a fixed percentage. Brand, model and product type matter, but so do condition, age, rarity, colour or variation, and current demand. A limited colourway or a desirable older model may sell differently from a similar-looking everyday version.
Recent marketplace sales help put those details into context. FlipWorth looks at relevant comparable items rather than applying a generic depreciation rule. The closer a comparison is to your item, the more useful it is when thinking about an estimated resale value. A worn pair of trainers and an unworn pair in the same size, for instance, should not be treated as identical.
Asking price is not sold price.
An active listing tells you what a seller hopes to receive. A sold listing tells you what a buyer paid. Both can offer context, but completed sales are a stronger signal of what someone might actually pay.
Any estimate is a guide, not a promise of a sale. Before deciding on a price, check the comparable listings, the item's exact specification and the condition you can verify in person.
03 / A WORKED EXAMPLE
Say you spot a pair of Nike Air Jordan trainers for £40. After checking comparable items, you are considering an estimated resale value of £85. Here is how you might think through that purchase.
Illustrative item
Potential profit = Estimated Resale Value - Purchase Price
£85 - £40 = £45
ROI = Potential Profit ÷ Purchase Price × 100
£45 ÷ £40 × 100 = 112.5%
These figures are illustrative, not an actual FlipWorth valuation or a guaranteed selling price. The £45 and 112.5% calculations are before selling costs; your real return could be lower.
04 / THE MONEY VIEW
A good resale price does not automatically make a good buy. Compare what you might receive with the amount you have to spend to acquire the item. FlipWorth can help you assess whether a find could be worth buying for resale before you hand over the money.
That simple figure is a starting point. Actual profit can be affected by marketplace fees, postage, packaging, payment processing, returns and taxes where applicable. Allow for those costs before deciding what you can afford to pay. FlipWorth does not guarantee a profit.
05 / THE PERCENTAGE VIEW
Return on investment, or ROI, compares potential profit with your purchase price. It helps you see how much of a return you might make relative to the money tied up in an item, rather than looking only at the cash amount. Already know your likely selling price? The reselling ROI calculator calculates profit, margin and your maximum buying price from the costs you enter, without an account.
ROI is useful when comparing possible purchases. An item that makes £20 profit on a £20 purchase has a higher percentage return than one that makes £30 profit on a £100 purchase, even though the latter makes more cash. Neither figure tells the whole story: consider selling time, costs and how certain the estimate feels.
06 / WHAT TO BRING
You might be asking “how much is my item worth?” about a charity-shop find, a piece from your wardrobe or something you saw at a car boot sale. FlipWorth can help investigate second-hand value across a range of items, from familiar branded products to more unusual finds.
It works best when enough relevant marketplace evidence is available for comparable items. A rare object with no useful matches, an unverified collectible or an item in a very different condition may be harder to assess. Treat the result as a starting point and use your own judgement.
07 / READ THE MARKET
Imagine seeing three similar items listed for £100. That tells you what three sellers want, not whether buyers are paying £100. If comparable items recently sold for less, those completed sales can give you a more realistic picture of the resale market. An active listing is an asking price; a sold listing is evidence of what a buyer was willing to pay.
FlipWorth checks recent sold eBay comparables first when enough reliable sold data exists. When it does not, current active listings provide a separate fallback, not proof of a completed sale. The analysis shows the evidence source so you can judge how much weight to place on the estimate. That distinction matters particularly for unusual items, sparse markets and fast-changing demand.
If you want to research an item yourself before using FlipWorth, learn how to check eBay sold prices and compare relevant completed sales with active asking prices. If you don’t know exactly what you have, you can also find an item from a photo.
Learn how sold comps work to choose stronger valuation evidence, then follow the guide to how to price items for resale to account for costs and profit. Want to see the process before checking your own find? Try the live demo, or visit the FlipWorth homepage to learn more about the analysis flow.
Good decisions need useful context. Here is the short version.
FlipWorth is a resale intelligence app that helps you identify an item, estimate its likely resale value using sold and comparable listings, and see your potential profit before you buy.
Google Lens is designed to help you identify an item and find visually similar products online. FlipWorth goes further for resellers. It identifies the item, searches recent sold marketplace listings, compares likely matches, estimates resale value, and shows potential profit, ROI and a 90-day sell-through rate. In simple terms: Google Lens helps you find what an item is. FlipWorth helps you decide whether it’s worth flipping.
FlipWorth combines visual identification with recent sold eBay comps when enough reliable sales are available. If sold evidence is limited, it uses current active listings as a separate fallback. You get an estimated resale range, not a promise, so you can decide with your eyes open.
FlipWorth checks recent sold eBay comps first because completed sale prices are the clearest market signal. When there are not enough reliable sold comps, it uses current active listings as a fallback. You can inspect the evidence used in the analysis rather than relying on a single AI-generated price.
FlipWorth starts with the most likely resale estimate and works out the highest purchase price that would still meet both your Minimum Profit and Minimum ROI targets. It uses whichever target produces the lower maximum, rounds sensibly for the selected market, and never recommends a negative price.
Minimum ROI is the lowest percentage return you’re willing to accept compared with what you pay. Minimum Profit is the minimum cash profit you want after the purchase price and estimated costs. FlipWorth uses both targets together when calculating your maximum purchase price and BUY, MAYBE, or SKIP recommendation.
It works best for branded clothing, accessories, electronics, homeware, and collectables with enough resale history to compare.
You get an item identification, recent sold or active eBay comparable listings, an estimated resale range, costs, ROI, and the highest price we would pay. The result shows which evidence source was used.
We are currently not in the app stores so beware of imposters. FlipWorth is a Progressive Web Application (PWA) so when you navigate to the website, a prompt should appear to install FlipWorth on your phone.
Take a photo and we’ll perform a search of sold listings across 10 marketplaces (international eBay, Poshmark and Mercari). If no image meets the confidence threshold, we’ll show the closest scored listing as a best-effort price reference.
Yes. Your plan stays active through the billing period, and you can return to the free plan without losing your analysis history.
YOUR NEXT FIND
See what comparable items have sold for, review the estimated value and weigh up the potential return before you buy. One photo is a useful place to start.
