Price index
P21 price trends
What P21 has cost per milligram across the vendors we track, read from their own listings and dated. US dollar listings only, and rises as readily as falls — it is an index, not a buying prompt.
- P21
41 readings between 28 Aug 2026 and 11 Oct 2026, over which the average fell 21%. Each point is the mean of every confirmed listing we held that day, so a vendor arriving or leaving moves it as much as a price change does.
Where it sits today
- Cheapest per mg
- $1.40
- Dearest per mg
- $23.20
- Vendors
- 9
P21 listings that moved
SteadyNo P21 listing we track has changed price in the past month. That is a recorded result rather than missing data.