Supplement price index
Every day, the median and cheapest price per gram of active ingredient is recorded for each category on Amazon United States. This is the part nobody else publishes: not what creatine costs today, but what it cost last month.
Collecting. 0 days recorded so far — 30-day movement appears once there is a month of history. The series starts the day the job first ran and cannot be backfilled, which is why it runs daily from the beginning.
| Category | Median now | 30-day | Trend | Listings |
|---|
No history yet. Run npm run snapshot (or wait for the daily job) to record the first day.