Whether you’re clearing out a closet, standing in a thrift store, or wondering if that garage-sale find was a score, the method for valuing an item is the same. Professional resellers use it every day, and it takes about five minutes per item once you know the steps. We’ll walk through the manual method first, then show you the shortcut.
Step 1: Identify exactly what you have
Value lives in the details. “Nike sneakers” could be worth $15 or $1,500 — the model, colorway, and year decide which. Before you search anything, find:
- Brand and model name or number. Check tags, labels, engravings, the underside, and inside seams. Electronics usually have a model number on the back or bottom.
- Variant details. Size, color, capacity, edition, year of manufacture. These often matter more than the model itself.
- Completeness. Original packaging, manuals, cables, dust bags, and accessories can increase value, especially when buyers expect the item to be complete.
Step 2: Search sold listings, not asking prices
This is the step most people get wrong. Active listings show what sellers hope to get; many of those items sit unsold for months. What you want is completed sales — the prices buyers actually paid.
On eBay, search for your item, then enable the Sold Items filter. On other marketplaces like Mercari or Facebook Marketplace, sold data is harder to see, which is why eBay’s sold listings are the reference point most resellers price against, even when they plan to sell elsewhere.
Compare the total amount paid, including shipping. A $40 sale with $20 shipping is meaningfully different from a $40 sale with free shipping.
Rule of thumb: if an item shows ten active listings at $80 and sold listings at $45, it’s a $45 item. The $80 sellers are waiting, not selling.
Step 3: Filter to your item's condition
Comps only count if they match. A “new in box” sale tells you nothing about your well-used copy. Sort the sold results into rough condition tiers — new, like-new, good, worn/for-parts — and keep only the sales that match yours honestly. Buyers will judge condition from your photos anyway, so pricing against the wrong tier just leads to an item that doesn’t move.
Step 4: Find the typical selling range
Ignore listings that clearly do not match your item, along with unusually high or low sales. Look at the cluster where most comparable items sold. The lower end represents a faster sale, while the upper end may require better condition, stronger photos, or more time.
Step 5: Subtract fees and shipping
Market value isn’t take-home value. Check the exact fees for the marketplace you plan to use — online selling fees, promoted-listing costs, payment processing, shipping, and returns can materially reduce what you keep, while a local Facebook Marketplace sale may have no platform fee at all. For a quick estimate, some sellers subtract roughly 15%, but the actual amount varies by marketplace and category. Sometimes the math still works; sometimes it turns a listing into a donate-pile decision.
The shortcut: scan it
The manual method works for anything, but it assumes you know what the item is and have five minutes per item. That falls apart in a thrift aisle with a cart full of maybes — or with an unmarked item you can’t even name.
That’s the gap WorthIt was built for. Snap a photo and the app identifies the item, reads live comparable listings, and returns a suggested price with a realistic low-to-high range — plus quick-sale, balanced, and max-profit prices.
WorthIt: Scan and Compare currently uses live marketplace listings as one pricing signal. Because active listings reflect seller expectations rather than confirmed sales, the app adjusts its estimate instead of treating the highest asking prices as market value. For rare or high-value items, verify the result against recent sold listings before buying or listing the item.
Common questions
How do I find sold listings on eBay?
Search for your item on eBay, then check the Sold Items filter in the sidebar (or under Filters on mobile). This changes the results from asking prices to prices buyers actually paid, which is the only number that matters for resale value.
Why do sold prices vary so much for the same item?
Condition, completeness, variant, and timing all move the price. A boxed item with accessories can sell for double a bare one, and a rare colorway can be worth several times the common version. That is why matching condition and variant to your item matters more than any single average number.
What if I can't find any sold listings for my item?
Widen the search: drop the model number and search the product line, check similar variants, or look on niche marketplaces for that category. If nothing comparable has sold recently, that itself is a signal — either the item is rare enough to list high and wait, or demand is too thin to price aggressively.
How accurate are app-based resale estimates?
Estimates from any app, including WorthIt, are informational rather than guaranteed. Accuracy depends on photo quality, how precisely the item is identified, its condition, and how many comparable listings exist. Treat an estimate as a starting range and confirm against sold listings before you set a final price.
Put a number on it in seconds.
WorthIt identifies what you’re holding, reads the resale market, and hands you a price range you can act on.
Free on iPhone. Estimates are informational, not guarantees.