Community price on backpack.tf: 15.0–16.0 keys, last changed 2026-08-18 (2mo ago). The live quote above, 16.1 keys, is 7% higher and last moved 12d 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: $40.29 — the lowest of one listing for the Green Energy effect when we looked on 2026-10-07 01:46 UTC (6d 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 16 keys, 3.22 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 Brain-Warming Wear”, with no effect in the name — the effect comes from the individual listing.
Price history
98 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.
Green Energy Brain-Warming Wear sell price, 2025-09-25 to 2026-10-12: 98 observations, from 20.4 keys to 16.2 keys. Sampled evenly across the range.
Observed (UTC)
Sell
Buy
25 SEP 2025 · 03:29 UTC
20.4 keys
16.7 keys
9 OCT 2025 · 09:18 UTC
19.5 keys
17.5 keys
10 NOV 2025 · 01:31 UTC
18.7 keys
16.8 keys
26 NOV 2025 · 08:52 UTC
16.6 keys
13.3 keys
15 DEC 2025 · 00:48 UTC
36.4 keys
12.1 keys
29 DEC 2025 · 02:55 UTC
15.0 keys
9.25 keys
22 JAN 2026 · 07:44 UTC
16.3 keys
12.3 keys
22 FEB 2026 · 22:41 UTC
15.3 keys
7.60 keys
5 APR 2026 · 12:29 UTC
15.3 keys
7.89 keys
29 APR 2026 · 20:30 UTC
16.5 keys
8.61 keys
26 MAY 2026 · 04:31 UTC
14.6 keys
11.6 keys
23 JUN 2026 · 11:13 UTC
12.6 keys
11.0 keys
19 JUL 2026 · 22:44 UTC
6.81 keys
5.92 keys
3 AUG 2026 · 02:24 UTC
11.1 keys
9.64 keys
21 AUG 2026 · 12:08 UTC
12.0 keys
10.4 keys
28 AUG 2026 · 04:09 UTC
12.0 keys
10.5 keys
1 SEP 2026 · 18:08 UTC
7.30 keys
6.35 keys
2 SEP 2026 · 18:09 UTC
7.29 keys
6.34 keys
4 SEP 2026 · 06:08 UTC
7.44 keys
6.47 keys
6 SEP 2026 · 18:09 UTC
11.7 keys
10.2 keys
11 SEP 2026 · 02:09 UTC
13.5 keys
11.8 keys
12 SEP 2026 · 06:08 UTC
13.5 keys
11.8 keys
13 SEP 2026 · 18:08 UTC
14.2 keys
12.4 keys
14 SEP 2026 · 20:08 UTC
14.4 keys
12.5 keys
16 SEP 2026 · 08:08 UTC
14.4 keys
12.5 keys
17 SEP 2026 · 20:08 UTC
14.6 keys
12.7 keys
19 SEP 2026 · 10:08 UTC
14.7 keys
12.7 keys
21 SEP 2026 · 06:09 UTC
14.8 keys
12.9 keys
22 SEP 2026 · 06:09 UTC
16.1 keys
14.0 keys
24 SEP 2026 · 04:08 UTC
15.3 keys
13.3 keys
24 SEP 2026 · 14:10 UTC
15.0 keys
13.0 keys
24 SEP 2026 · 22:09 UTC
15.0 keys
13.0 keys
25 SEP 2026 · 06:08 UTC
15.3 keys
13.3 keys
25 SEP 2026 · 12:08 UTC
16.0 keys
13.9 keys
26 SEP 2026 · 00:08 UTC
16.1 keys
14.0 keys
26 SEP 2026 · 08:08 UTC
16.1 keys
14.0 keys
26 SEP 2026 · 18:08 UTC
16.2 keys
14.1 keys
27 SEP 2026 · 20:09 UTC
16.4 keys
14.3 keys
30 SEP 2026 · 20:09 UTC
16.1 keys
14.0 keys
12 OCT 2026 · 09:09 UTC
16.2 keys
14.1 keys
Price history in numbers
98 readings since 25 Sep 2025
Over the last 30 days the Green Energy Brain-Warming Wear's sell price ranged from 14.2 keys to 16.4 keys and is up 14.4% after 42 moves. Over a year it ranged from 6.81 keys to 36.4 keys (down 12.3%). Today's 16.2 keys sits in the lower third of its range: the lowest we have recorded is 6.81 keys (19 Jul 2026) and the highest 36.4 keys (15 Dec 2025). The price has moved 95 times since we began recording it — about once every 4 days.