Category price index
Human-Machine Interface
Starts at 100 in March 2026
Index level
87.3
-12.7%
since March 2026
as of September 2026
- 1 month
- -18.3%
- 3 months
- -16.3%
- 12 months
- —
Price barometer
Good price
Now · 87.3
Low 87.3
High 106.8
Where the index sits between its lowest and highest level so far.
What this index is built from
- Parts tracked
- 62
- Parts with price history
- 52
- Parts moving the index
- 50
- Monthly price points
- 895
- Asking prices seen
- 4613
How to read this index
The level starts at 100. 110 means the parts in this index cost about 10% more than at the start; 95 means about 5% less.
It follows price changes, not price levels: each month it moves by the typical change of the parts that were priced both that month and the month before, so a few very expensive parts never dominate it, and parts coming and going don't move it on their own.
1, 3 and 12 months show the change over that period. The barometer shows where today's level sits between the index's lowest and highest point.
Month by month
| Month | Index level | Change | Parts priced |
|---|---|---|---|
| September 2026 | 87.3 | -18.3% | 11 |
| August 2026 | 106.8 | +1.2% | 28 |
| July 2026 | 105.6 | +1.3% | 53 |
| June 2026 | 104.2 | +3.0% | 69 |
| May 2026 | 101.2 | +2.2% | 81 |
| April 2026 | 99.0 | -1.0% | 93 |
| March 2026 | 100.0 | Start (100) | — |