Community price on backpack.tf: 46.0–56.0 keys, last changed 2021-09-29 (5.0y ago). The live quote above, 90.9 keys, is 98% 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: $249.01 — the lowest of one listing for the Green Energy effect when we looked on 2026-10-11 01:36 UTC (2d 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 90 keys, 55.11 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 Bucket”, with no effect in the name — the effect comes from the individual listing.
Price history
120 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 Bucket sell price, 2025-09-25 to 2026-10-13: 120 observations, from 58.0 keys to 98.5 keys. Sampled evenly across the range.
Observed (UTC)
Sell
Buy
25 SEP 2025 · 03:29 UTC
58.0 keys
39.8 keys
19 OCT 2025 · 19:41 UTC
53.6 keys
39.8 keys
22 JUN 2026 · 17:13 UTC
66.9 keys
58.2 keys
12 JUL 2026 · 20:45 UTC
67.5 keys
58.7 keys
3 AUG 2026 · 00:24 UTC
80.9 keys
70.4 keys
21 AUG 2026 · 18:09 UTC
83.2 keys
72.3 keys
23 AUG 2026 · 06:09 UTC
83.7 keys
72.7 keys
24 AUG 2026 · 20:09 UTC
83.6 keys
72.7 keys
26 AUG 2026 · 08:08 UTC
84.6 keys
73.6 keys
27 AUG 2026 · 20:10 UTC
85.4 keys
74.3 keys
29 AUG 2026 · 22:09 UTC
86.6 keys
75.3 keys
31 AUG 2026 · 10:09 UTC
86.9 keys
75.6 keys
1 SEP 2026 · 22:08 UTC
87.4 keys
76.0 keys
3 SEP 2026 · 10:08 UTC
86.9 keys
75.5 keys
4 SEP 2026 · 22:07 UTC
87.0 keys
75.6 keys
6 SEP 2026 · 10:08 UTC
90.5 keys
78.7 keys
7 SEP 2026 · 22:08 UTC
89.2 keys
77.5 keys
9 SEP 2026 · 10:08 UTC
89.3 keys
77.6 keys
10 SEP 2026 · 22:08 UTC
89.3 keys
77.6 keys
12 SEP 2026 · 10:08 UTC
89.1 keys
77.5 keys
13 SEP 2026 · 22:08 UTC
90.1 keys
78.4 keys
15 SEP 2026 · 10:08 UTC
89.8 keys
78.1 keys
16 SEP 2026 · 22:08 UTC
91.6 keys
79.6 keys
18 SEP 2026 · 10:08 UTC
90.6 keys
78.8 keys
19 SEP 2026 · 22:10 UTC
91.8 keys
79.8 keys
21 SEP 2026 · 12:08 UTC
91.5 keys
79.5 keys
23 SEP 2026 · 00:08 UTC
93.5 keys
81.3 keys
24 SEP 2026 · 12:08 UTC
93.9 keys
81.7 keys
26 SEP 2026 · 00:08 UTC
94.1 keys
81.8 keys
27 SEP 2026 · 14:08 UTC
94.9 keys
82.6 keys
29 SEP 2026 · 14:07 UTC
93.9 keys
81.6 keys
1 OCT 2026 · 02:08 UTC
93.1 keys
81.0 keys
2 OCT 2026 · 15:12 UTC
93.4 keys
81.2 keys
4 OCT 2026 · 03:09 UTC
93.1 keys
80.9 keys
5 OCT 2026 · 19:10 UTC
95.4 keys
83.0 keys
7 OCT 2026 · 07:09 UTC
97.9 keys
85.1 keys
8 OCT 2026 · 19:09 UTC
98.5 keys
85.6 keys
10 OCT 2026 · 07:09 UTC
98.6 keys
85.7 keys
11 OCT 2026 · 19:08 UTC
98.4 keys
85.6 keys
13 OCT 2026 · 07:08 UTC
98.5 keys
85.6 keys
Price history in numbers
120 readings since 25 Sep 2025
Over the last 30 days the Green Energy Brain Bucket's sell price ranged from 89.2 keys to 98.7 keys and is up 10.4% after 59 moves. Over a year it ranged from 51.1 keys to 98.7 keys (up 83.8%). Today's 98.5 keys sits at the top of its range: the lowest we have recorded is 51.1 keys (25 Oct 2025) and the highest 98.7 keys (9 Oct 2026). The price has moved 119 times since we began recording it — about once every 3 days.