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, one per line or separated by spaces, 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 spaces or a comma and a space. Dollar signs and thousands commas are fine.

Outlier handlingStatistical rule, not a judgment about the listings

Paste your sold prices above.

What does the sold comp analyzer calculate?

It calculates four things: the median, the middle half (25th to 75th percentile), the average for comparison, and any outliers.

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?

Paste only sales that match your item on identity, condition band, completeness, size and recency, because this will happily compute a very precise median of the wrong comp set. 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?

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

The verdict line under the results uses cut-offs this site chose, a rule of thumb and not a standard: a middle half under 25% of the median reads as tight, 25% to 60% as moderate, and over 60% as very wide, and fewer than 8 prices reads as provisional.

What format should I paste sold prices in?

One price per line works best. Spaces, or a comma followed by a space, also separate prices, and dollar signs are ignored. A comma between digits, as in 1,299.50, is read as a thousands separator, so put a space after a comma that separates two prices.

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 can be 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 publishes to eBay through eBay's official Trading API, using eBay's own sign-in, and never sees your eBay password. Read this site as a guide from a tool maker with a stake in the topic, not an independent review.