How we measure the data on Closo
Every figure in a Closo data block names its window and its source. This page says how each one is calculated and when we publish it. When the sample is too small, we say so instead of showing a number.
Method last revised Nov 1, 2026.
- Resale value
- Sell speed
- Best time to sell
- Condition premium
- Size demand
- Supplier check
- Liquidation supply
- Reselling policy
- Stock by state
- List, resale and wholesale
- Lot price history
- Brand resale programmes
Resale value
How much of its list price does an item keep when it is resold?
- What the figure is
- A percentage of the list price, with the median resale price and the list price shown beside it.
- What it covers
- One brand and one product type, optionally one segment, new with tags unless stated.
- Time window
- Sales from the last 365 days.
- When we publish it
- Published when at least 30 sales are in the window and the brand's list price for that product type is known. With sales but no list price, only the median resale price is shown, marked as a small sample.
- Source
- Sold listings on Poshmark collected by Closo; list prices as shown on the brand's own site on the stated date.
- How it is calculated
- Median resale price divided by the median list price of the same brand and product type.
Sell speed
How fast does this brand and product type sell?
- What the figure is
- The median number of days from listing to sale, with sell-through and a 0 to 100 speed score in the table.
- What it covers
- One brand and one product type, optionally one segment.
- Time window
- Sales from the last 365 days.
- When we publish it
- Published when at least 30 sales are in the window and the median is above zero days.
- Source
- Sold listings on Poshmark collected by Closo.
- How it is calculated
- Median of (sale date minus listing date) across sold listings; sell-through is sold listings divided by all listings seen in the window.
Best time to sell
Which months does this product type sell best in?
- What the figure is
- An index for each of the 12 months, where 1.00 is the yearly average.
- What it covers
- One product type, or one brand and product type.
- Time window
- Sales from the last 365 days, grouped by calendar month.
- When we publish it
- Published when at least 120 sales are in the window.
- Source
- Sold listings on Poshmark collected by Closo.
- How it is calculated
- Sales in a month divided by the average monthly sales over the year.
Size demand
Which sizes sell, and how fast?
- What the figure is
- A table of sizes with each size's share of sales and its median days to sell.
- What it covers
- One brand and one product type, optionally one segment.
- Time window
- Sales from the last 365 days.
- When we publish it
- Published when at least three sizes each have 50 or more sales.
- Source
- Sold listings on Poshmark collected by Closo.
- How it is calculated
- Sales of a size divided by all sales of the brand and product type; days to sell as for sell speed.
Supplier check
What do we know about this supplier?
- What the figure is
- A verdict (verified, checking or flagged) with the facts behind it in a table.
- What it covers
- One supplier on Closo.
- Time window
- Facts as of the stated date; lot history since the supplier joined.
- When we publish it
- Published when the supplier has at least 5 published lots or confirmed business facts.
- Source
- The supplier's published lots and orders on Closo, and business facts confirmed by Closo.
- How it is calculated
- Closo's assessment from the listed facts on the stated date; each fact is shown with its date.
Liquidation supply
How much liquidation stock is coming to market in this category?
- What the figure is
- Lots and units published per week, the median price per unit and the change over 8 weeks.
- What it covers
- One category, optionally one week.
- Time window
- The last 8 weeks.
- When we publish it
- Published when the category has at least 20 published lots.
- Source
- Lots published on Closo.
- How it is calculated
- Counts of lots and units by week of publication; median of lot price divided by stated unit count.
Reselling policy
Can you resell this brand, and on what terms?
- What the figure is
- A reviewed summary: whether reselling is allowed, the brand's own policy and the limits marketplaces set.
- What it covers
- One brand.
- Time window
- The source is reviewed at least every 180 days.
- When we publish it
- Published when the policy source was reviewed within the last 180 days.
- Source
- The brand's and marketplaces' published policies, linked and reviewed by Closo.
- How it is calculated
- A reviewed reading of the linked policy; not legal advice.
Stock by state
Where does liquidation stock ship from?
- What the figure is
- Lots and units published from the state and its top categories.
- What it covers
- One state, optionally one category.
- Time window
- Lots live now and those published in the last 90 days.
- When we publish it
- Published when the state has at least 8 published lots.
- Source
- Ship-from locations of lots published on Closo.
- How it is calculated
- Counts of lots and units by the supplier's ship-from state.
List, resale and wholesale
How do list, resale and wholesale prices compare for this brand?
- What the figure is
- A table from list price to resale median to wholesale price per unit, and a discount index for the week.
- What it covers
- One brand, optionally one product type.
- Time window
- List prices from the latest check; resale from the last 365 days; wholesale from lots live now.
- When we publish it
- Published when at least 50 items of the brand were observed. List prices come from the brand's own site, or from Amazon via Keepa when the brand publishes none (marked as Amazon).
- Source
- The brand's own site on the stated date, Amazon via Keepa, Poshmark sold listings collected by Closo, and lots on Closo.
- How it is calculated
- Medians at each step; the discount index is the share of observed items priced below list in the week.
Lot price history
How has this lot's price changed?
- What the figure is
- Each observed price with its date, and stock events such as a restock or a sale.
- What it covers
- One lot on Closo.
- Time window
- Since the lot was published.
- When we publish it
- Published when there are at least 2 price observations.
- Source
- Prices and stock of the lot as published on Closo.
- How it is calculated
- Each observation as recorded; no smoothing.
Brand resale programmes
Does the brand run its own resale or trade-in programme?
- What the figure is
- Not published yet.
- What it covers
- One brand.
- Time window
- To be set when the series is published.
- When we publish it
- Not published: this series is reserved and has no figures yet.
- Source
- To be set when the series is published.
- How it is calculated
- To be set when the series is published.
Prices on hub and lot pages are explained in How we price. Past resale results do not promise future ones; prices and demand change.
