Community price on backpack.tf: 34.0–35.0 keys, last changed 2017-10-04 (9.0y ago). The live quote above, 52.9 keys, is 56% 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: $155.30 — the lowest of one listing for the Green Energy effect when we looked on 2026-10-11 01:30 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 52 keys, 57.88 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 Barnstormer”, with no effect in the name — the effect comes from the individual listing.
Price history
109 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 Barnstormer sell price, 2025-09-25 to 2026-10-13: 109 observations, from 35.5 keys to 54.3 keys. Sampled evenly across the range.
Observed (UTC)
Sell
Buy
25 SEP 2025 · 03:29 UTC
35.5 keys
28.2 keys
19 OCT 2025 · 20:11 UTC
33.2 keys
28.2 keys
19 NOV 2025 · 14:40 UTC
57.0 keys
47.2 keys
1 DEC 2025 · 00:52 UTC
61.0 keys
51.8 keys
22 JAN 2026 · 01:43 UTC
51.4 keys
39.0 keys
23 FEB 2026 · 14:40 UTC
50.2 keys
42.4 keys
16 MAR 2026 · 16:07 UTC
48.6 keys
41.2 keys
30 MAR 2026 · 02:07 UTC
53.4 keys
18.8 keys
19 APR 2026 · 22:30 UTC
52.7 keys
30.8 keys
17 MAY 2026 · 22:31 UTC
52.0 keys
39.3 keys
8 JUN 2026 · 00:30 UTC
51.8 keys
39.8 keys
22 JUN 2026 · 00:10 UTC
52.7 keys
41.4 keys
12 JUL 2026 · 20:45 UTC
47.4 keys
41.3 keys
3 AUG 2026 · 06:24 UTC
55.3 keys
48.1 keys
24 AUG 2026 · 10:08 UTC
24.6 keys
21.4 keys
25 AUG 2026 · 22:09 UTC
25.1 keys
21.8 keys
26 AUG 2026 · 22:09 UTC
25.4 keys
22.1 keys
28 AUG 2026 · 11:22 UTC
25.8 keys
22.4 keys
29 AUG 2026 · 22:09 UTC
26.5 keys
23.0 keys
31 AUG 2026 · 10:09 UTC
26.7 keys
23.2 keys
2 SEP 2026 · 08:08 UTC
46.4 keys
40.3 keys
3 SEP 2026 · 20:08 UTC
48.7 keys
42.3 keys
5 SEP 2026 · 08:08 UTC
48.5 keys
42.2 keys
6 SEP 2026 · 20:08 UTC
50.1 keys
43.6 keys
7 SEP 2026 · 22:08 UTC
50.2 keys
43.6 keys
9 SEP 2026 · 10:08 UTC
50.0 keys
43.5 keys
10 SEP 2026 · 22:08 UTC
50.1 keys
43.6 keys
12 SEP 2026 · 10:08 UTC
50.4 keys
43.8 keys
13 SEP 2026 · 22:08 UTC
51.3 keys
44.7 keys
14 SEP 2026 · 22:08 UTC
51.4 keys
44.7 keys
16 SEP 2026 · 10:08 UTC
51.6 keys
44.9 keys
17 SEP 2026 · 22:09 UTC
52.6 keys
45.7 keys
19 SEP 2026 · 10:07 UTC
52.8 keys
46.0 keys
20 SEP 2026 · 10:08 UTC
52.7 keys
45.8 keys
22 SEP 2026 · 16:09 UTC
53.4 keys
46.4 keys
28 SEP 2026 · 04:08 UTC
54.3 keys
47.2 keys
4 OCT 2026 · 23:10 UTC
54.4 keys
47.3 keys
7 OCT 2026 · 23:10 UTC
53.9 keys
46.9 keys
9 OCT 2026 · 13:10 UTC
54.8 keys
47.7 keys
13 OCT 2026 · 01:08 UTC
54.3 keys
47.2 keys
Price history in numbers
109 readings since 25 Sep 2025
Over the last 30 days the Green Energy Barnstormer's sell price ranged from 50.7 keys to 54.9 keys and is up 7.1% after 30 moves. Over a year it ranged from 24.6 keys to 61.1 keys (up 63.6%). Today's 54.3 keys sits in the upper third of its range: the lowest we have recorded is 24.6 keys (24 Aug 2026) and the highest 61.1 keys (25 Nov 2025). The price has moved 106 times since we began recording it — about once every 4 days.