Confidence Levels Explained

SneakerScan shows a confidence level with each eBay price estimate to help you judge how reliable the pricing guidance is.

The confidence level is not a guarantee that your item will sell at that price. It is a signal based on the number and consistency of matching active eBay listings found at the time of the search.

SneakerScan currently uses active eBay listings, not completed sold listings.

When you check eBay, SneakerScan searches using the strongest product details available, usually:

• Brand
• Model name
• Nike style code
• UK size

For example:

Nike Quest 5 DD9291-009 UK 5

If the full style code search returns no results, SneakerScan may widen the search by using only the first part of the style code:

FV5929-107 becomes FV5929

This helps find more possible matches, but because the search is less exact, the confidence level is reduced.

Before calculating prices, SneakerScan filters out obvious price outliers. Very low or very high listings can distort the estimate, so listings outside the expected sneaker resale range are ignored for the main calculation.

The app then calculates:

• Median price
• Average price
• Lowest usable price
• Highest usable price
• Quick sale price
• Patient sale price
• Confidence level

SneakerScan groups eBay price estimates into high confidence, medium confidence, low confidence, or insufficient data. The level depends on how many usable listings were found, how consistent the prices are, and how exact the search was.

High confidence means SneakerScan found a strong set of matching listings and the prices are relatively consistent.

This usually means:

• At least 10 usable listings were found.
• The price range is tight compared with the median price.
• The search used a strong match, such as the full style code.

You can treat this as the most reliable estimate, while still checking the actual listings if the item is valuable or unusual.

Medium confidence means the estimate is useful, but there is more uncertainty.

This usually means:

• At least 5 usable listings were found.
• Prices are reasonably consistent, but not as tight as a high-confidence result.
• Or the search had to be widened from a full style code to a partial style code.

A medium-confidence result is a good guide, but it is worth reviewing the listing titles, conditions, and sizes before making a final pricing decision.

Low confidence means SneakerScan found some matching data, but the estimate should be treated carefully.

This usually means:

• There are at least 3 usable listings.
• The price spread is wide.
• The item may have mixed conditions, variants, or imperfect matches.
• Or a widened partial-style-code search reduced the confidence.

Use low-confidence results as a rough starting point rather than a firm valuation.

Insufficient data means there were too few usable listings to produce a reliable estimate.

This can happen when:

• Fewer than 3 usable listings were found.
• The search returned no results.
• Most results were filtered out as unrealistic outliers.
• The product is rare, new, incorrectly scanned, or listed under inconsistent titles.

When this happens, try checking the style code, model name, and size manually, or search eBay directly for broader context.

Confidence may be lower when:

• There are only a few matching listings.
• Prices vary widely between listings.
• The search had to use a partial style code instead of the full code.
• Listings may include different sizes, variants, or conditions.
• The market for that shoe is thin or inconsistent.

Use SneakerScan's eBay price as a decision aid, not a final sale guarantee.

For fast stock checks, the median and confidence level are usually the most useful numbers. For higher-value items, review the actual marketplace listings and consider condition, box quality, demand, rarity, and how quickly you want to sell.