← August 2026 · The daily index
Used Price Index, September 2026
What secondhand prices did over September 2026, from the last reading of August, measured from the cheapest genuine used listing for each of about 2,050 specific models on every day of the month.
Fell most over the month
- Samsung Galaxy phones -6.3%
- Drones -5.0%
- Wacom tablets -4.8%
- Cameras -4.2%
- Impact wrenches -4.1%
Rose most over the month
- Microphones +3.6%
- Graphics cards +3.0%
- Portable power stations +2.3%
- Printers +2.0%
- Garmin watches +1.9%
Every category
Categories with fewer than 8 models on the last day are left out, because one listing would swing them. Each figure is that category's own chained index over the month.
16 categories marked mostly on moved most of the month in one or two days. A category index moves 2% in a day only about once in eighty days, and when it does it is more often the collector matching different listings than a change in what things sell for, so those are left out of the lists above.
How to read this
It is a cheapest-listing index, so it tracks where the floor of the secondhand market sits rather than what a typical buyer pays. It is chained day to day, and a single-day move on one model of more than 25% up or 20% down is discarded as the collector matching a different listing rather than a price change. The full method is on the daily index page.
This page is written once, when the month ends, and is not revised afterwards. The daily figures behind it are in the CSV, and the copy on GitHub has a commit for every day, so any number here can be checked against the day it was recorded.