Community price on backpack.tf: 90.0–115 keys, last changed 2021-07-29 (5.1y ago). The live quote above, 121 keys, is 34% higher and last moved 12h ago. They are different measures: the quote is what traders and bots are asking and bidding on the classifieds right now, and it moves for thousands of items every day; the community price is a suggestion accepted by vote, which changes only when someone argues it should. A quote well away from the vote is usually a price that is about to be re-argued. Community prices from backpack.tf, read under an hour ago.
Steam Market asking price: $502.91 — the lowest of one listing for the Purple Energy effect when we looked on 2026-09-03 01:26 UTC (3d ago). This is what a seller is asking, not what anything sold for. Steam pays out in Steam wallet funds, not cash, and Valve takes roughly 15% at the till — so asking prices there run well above the 120 keys, 42.33 ref shown above, which comes from the keys-and-metal market on backpack.tf. The two are different markets and are never blended. Steam lists the item as “Unusual Law”, with no effect in the name — the effect comes from the individual listing.
Price history
72 observations
Interactive chart. Press the left and right arrow keys to move along the series, Home or End to jump to either end, Escape to clear.
The key axis converts at today's rate. Prices are recorded in metal, so a line that is flat in keys followed the key rate rather than standing still.
Purple Energy Law sell price, 2025-09-25 to 2026-09-05: 72 observations, from 119 keys to 121 keys. Sampled evenly across the range.
Observed (UTC)
Sell
Buy
25 SEP 2025 · 03:29 UTC
119 keys
76.1 keys
9 OCT 2025 · 08:50 UTC
115 keys
80.8 keys
25 OCT 2025 · 17:00 UTC
104 keys
73.3 keys
10 NOV 2025 · 01:00 UTC
110 keys
77.4 keys
23 NOV 2025 · 22:42 UTC
141 keys
13.3 keys
8 DEC 2025 · 00:50 UTC
139 keys
14.5 keys
22 DEC 2025 · 07:12 UTC
142 keys
96.4 keys
4 JAN 2026 · 08:48 UTC
134 keys
97.0 keys
22 JAN 2026 · 01:44 UTC
134 keys
97.0 keys
29 JAN 2026 · 01:44 UTC
132 keys
96.9 keys
8 FEB 2026 · 22:43 UTC
115 keys
93.6 keys
22 FEB 2026 · 22:41 UTC
124 keys
95.5 keys
8 MAR 2026 · 22:42 UTC
122 keys
93.9 keys
22 MAR 2026 · 20:07 UTC
129 keys
101 keys
3 APR 2026 · 08:29 UTC
132 keys
103 keys
18 APR 2026 · 22:31 UTC
116 keys
105 keys
2 MAY 2026 · 20:31 UTC
108 keys
97.8 keys
16 MAY 2026 · 22:30 UTC
113 keys
102 keys
2 JUN 2026 · 22:30 UTC
132 keys
12.3 keys
15 JUN 2026 · 16:11 UTC
112 keys
12.4 keys
22 JUN 2026 · 00:11 UTC
115 keys
32.9 keys
5 JUL 2026 · 23:12 UTC
110 keys
37.8 keys
19 JUL 2026 · 12:45 UTC
111 keys
35.2 keys
11 AUG 2026 · 23:11 UTC
104 keys
90.6 keys
21 AUG 2026 · 12:08 UTC
91.3 keys
79.4 keys
22 AUG 2026 · 14:08 UTC
101 keys
88.3 keys
23 AUG 2026 · 04:09 UTC
106 keys
92.0 keys
24 AUG 2026 · 18:09 UTC
101 keys
87.4 keys
26 AUG 2026 · 00:08 UTC
152 keys
92.9 keys
27 AUG 2026 · 04:10 UTC
152 keys
100 keys
28 AUG 2026 · 11:23 UTC
121 keys
105 keys
28 AUG 2026 · 22:09 UTC
121 keys
105 keys
29 AUG 2026 · 22:09 UTC
121 keys
105 keys
30 AUG 2026 · 22:09 UTC
121 keys
105 keys
31 AUG 2026 · 22:09 UTC
120 keys
104 keys
1 SEP 2026 · 22:08 UTC
119 keys
104 keys
2 SEP 2026 · 22:08 UTC
119 keys
103 keys
3 SEP 2026 · 10:08 UTC
119 keys
103 keys
4 SEP 2026 · 10:08 UTC
125 keys
109 keys
5 SEP 2026 · 10:08 UTC
121 keys
105 keys
Price history in numbers
72 readings since 25 Sep 2025
Over the last 30 days the Purple Energy Law's sell price ranged from 89.6 keys to 153 keys and is up 15.9% after 27 moves. Over a year it ranged from 89.6 keys to 153 keys (up 1.5%). Today's 121 keys sits in the middle of its range: the lowest we have recorded is 89.6 keys (21 Aug 2026) and the highest 153 keys (26 Jul 2026). The price has moved 69 times since we began recording it — about once every 5 days.