Community price on backpack.tf: 33.0 keys, last changed 2018-11-15 (7.8y ago). The live quote above, 44.7 keys, is 36% higher and last moved 7h 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: $132.11 — the lowest of one listing for the Green Energy effect when we looked on 2026-09-03 01:34 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 44 keys, 44.44 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 Baron von Havenaplane”, with no effect in the name — the effect comes from the individual listing.
Price history
62 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 Baron von Havenaplane sell price, 2025-09-25 to 2026-09-05: 62 observations, from 34.1 keys to 44.7 keys. Sampled evenly across the range.
Observed (UTC)
Sell
Buy
25 SEP 2025 · 03:29 UTC
34.1 keys
27.9 keys
9 OCT 2025 · 08:38 UTC
33.6 keys
30.2 keys
19 OCT 2025 · 20:25 UTC
31.9 keys
28.7 keys
10 NOV 2025 · 00:47 UTC
32.2 keys
28.9 keys
19 NOV 2025 · 10:39 UTC
52.3 keys
27.9 keys
6 JAN 2026 · 09:37 UTC
56.1 keys
40.5 keys
11 JAN 2026 · 21:33 UTC
49.7 keys
37.9 keys
29 JAN 2026 · 01:44 UTC
49.7 keys
38.8 keys
8 FEB 2026 · 22:42 UTC
46.3 keys
36.8 keys
19 FEB 2026 · 06:40 UTC
49.7 keys
40.0 keys
4 MAR 2026 · 00:41 UTC
45.4 keys
37.7 keys
8 MAR 2026 · 20:42 UTC
45.0 keys
37.5 keys
30 MAR 2026 · 22:29 UTC
48.8 keys
40.9 keys
5 APR 2026 · 18:29 UTC
48.8 keys
41.0 keys
19 APR 2026 · 20:30 UTC
48.0 keys
41.3 keys
1 MAY 2026 · 08:30 UTC
44.9 keys
38.6 keys
22 MAY 2026 · 06:29 UTC
47.2 keys
40.9 keys
8 JUN 2026 · 04:31 UTC
46.7 keys
40.1 keys
23 JUN 2026 · 17:14 UTC
47.1 keys
40.9 keys
5 JUL 2026 · 21:12 UTC
47.2 keys
41.1 keys
12 JUL 2026 · 22:44 UTC
47.4 keys
41.2 keys
29 JUL 2026 · 04:46 UTC
51.7 keys
45.0 keys
3 AUG 2026 · 00:24 UTC
54.0 keys
46.9 keys
19 AUG 2026 · 12:08 UTC
17.1 keys
14.9 keys
24 AUG 2026 · 12:09 UTC
24.5 keys
21.3 keys
25 AUG 2026 · 00:08 UTC
25.6 keys
22.2 keys
26 AUG 2026 · 00:08 UTC
27.7 keys
24.1 keys
26 AUG 2026 · 12:09 UTC
28.4 keys
24.7 keys
27 AUG 2026 · 12:08 UTC
30.9 keys
26.8 keys
28 AUG 2026 · 00:09 UTC
32.0 keys
27.8 keys
29 AUG 2026 · 00:09 UTC
35.2 keys
30.6 keys
29 AUG 2026 · 12:09 UTC
35.9 keys
31.3 keys
30 AUG 2026 · 12:08 UTC
37.7 keys
32.8 keys
31 AUG 2026 · 12:09 UTC
37.1 keys
32.3 keys
1 SEP 2026 · 00:09 UTC
37.0 keys
32.2 keys
2 SEP 2026 · 10:08 UTC
42.2 keys
36.7 keys
2 SEP 2026 · 22:08 UTC
42.9 keys
37.3 keys
3 SEP 2026 · 22:08 UTC
44.3 keys
38.5 keys
4 SEP 2026 · 10:08 UTC
46.5 keys
40.4 keys
5 SEP 2026 · 10:08 UTC
44.7 keys
38.9 keys
Price history in numbers
62 readings since 25 Sep 2025
Over the last 30 days the Green Energy Baron von Havenaplane's sell price ranged from 9.57 keys to 54.7 keys and is down 18.3% after 26 moves. Over a year it ranged from 9.57 keys to 56.9 keys (up 31.1%). Today's 44.7 keys sits in the upper third of its range: the lowest we have recorded is 9.57 keys (21 Aug 2026) and the highest 56.9 keys (23 Nov 2025). The price has moved 60 times since we began recording it — about once every 6 days.