Free tool

Sold comp analyzer

The Sold comp analyzer is a free tool that turns a list of sold prices into one number to price from. Paste the prices in any format and it returns the median, the middle half (25th to 75th percentile) and any outliers, using the standard 1.5 × IQR rule. Nothing you paste leaves your browser.

Sold pricesOne per line, or separated by commas. Dollar signs are fine.

Outlier handlingStatistical rule, not a judgment about the listings

Paste your sold prices above.

What does the sold comp analyzer calculate?

The four outputs
Output	What it is	What to do with it
Median	The middle value once sorted	Your center of gravity. Start here, then decide where to sit relative to it
Middle half	The 25th to 75th percentile range	How much the market agrees. Narrow means a settled price
Average	Shown only for comparison	If it differs a lot from the median, your data is skewed and the median is the one to trust
Outliers	Values more than 1.5 interquartile ranges beyond the middle half	A standard statistical flag. Open them rather than deleting them

Which sold prices should you paste in?

This will happily compute a very precise median of the wrong comp set. Before pasting, check that every sale matches on identity, condition band, completeness, size and recency. What makes a good sold comp covers the near-misses that quietly ruin a price.

And paste sold prices only. How to see sold items on eBay shows where to find them. Asking prices are biased upward, for a structural reason that does not average out.

What does the middle-half range tell you?

The width of the middle half, relative to the median, is the most underused number here. A narrow band means a settled price and little upside in going high. A wide band means something other than the item is driving price, usually condition or presentation, and that is where a well-photographed listing earns a premium.

What format should I paste sold prices in?

Any. The tool extracts numbers from whatever you paste, so one per line, comma-separated, or copied straight from a page with dollar signs all work.

Should I remove outliers from my comps?

Open them first. The tool flags them using the standard interquartile rule, but it cannot tell whether a high sale was a rare variant or a bundle. That distinction is often more valuable than the median itself.

What does the middle-half range tell me?

How much the market agrees on the price. A narrow range means a settled value with little room above it. A wide one means condition, variant or presentation is driving price, which is an opportunity if you present well.

Does this tool store my data?

No. It runs in your browser and nothing is transmitted or saved.

Disclosure What's It Sold For comes from the team that builds FlowLister, an AI tool that turns your photos into a complete eBay listing and prices it from sold listings, with the sales behind the number shown. It's AI and it misses things, which is why every listing waits for your OK before it goes up on eBay. Read this site as a guide from a tool maker with a stake in the topic, not an independent review.