About
Secondhand Markets is a market-analytics platform for the secondhand economy. It tracks the asking prices of active listings across eBay categories and turns them into daily statistics and charts — asking-price trends, market size, and fresh-listing share — so you can see how a category moves over time.
The platform is a project of DBL J LLC. It is an independent analytics tool built on eBay's public Browse API. It is not affiliated with, endorsed by, or sponsored by eBay Inc. Product names and categories are used only to describe what the data measures.
Data & attribution
For how the statistics are defined and what they do and do not represent, see the methodology. Links to eBay throughout the site are affiliate links; see the privacy & disclosures page.
Charts are built with TradingView's Lightweight Charts library; the attribution and link appear in the site footer on every page.