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Category price index

PLC Modules

Starts at 100 in March 2026

Index level
99.9
-0.2% since March 2026
as of October 2026
1 month
-1.7%
3 months
-1.8%
12 months
—

Price barometer

Good price
Now · 99.8
Low 99.7 High 105.4

Where the index sits between its lowest and highest level so far.

What this index is built from

Parts tracked
245
Parts with price history
230
Parts moving the index
186
Monthly price points
1783
Asking prices seen
3940
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.

99 101 104 106 Mar 2026 Apr 2026 May 2026 Jun 2026 Jul 2026 Aug 2026 Sep 2026 Oct 2026
Each month moves by the typical price change of the parts that had a price that month and the month before (the most extreme quarter either way left out). A month with too few changes holds the previous level.

Month by month

Month Index level Change Parts priced
October 2026 99.9 -1.7% 43
September 2026 101.6 -1.5% 57
August 2026 103.1 +1.5% 69
July 2026 101.6 -3.6% 103
June 2026 105.4 +3.3% 91
May 2026 102.0 +2.3% 109
April 2026 99.7 -0.3% 130
March 2026 100.0 Start (100) —