This price has not changed since 2026-08-15 03:11 UTC. It reflects the last observed trade rather than current market value, and this page is excluded from our sitemap for that reason.
Community price on backpack.tf: 125 keys, last changed 2025-05-05 (1.4y ago). The live quote above, 76.3 keys, is 39% lower and last moved 2mo 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: $366.84 — the lowest of one listing for the Green Energy effect when we looked on 2026-10-11 01:31 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 76 keys, 18.44 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 Hellmet”, with no effect in the name — the effect comes from the individual listing.
Price history
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.
| Observed (UTC) | Sell | Buy |
|---|---|---|
| 25 SEP 2025 · 03:29 UTC | 124 keys | 102 keys |
| 30 SEP 2025 · 21:27 UTC | 124 keys | 102 keys |
| 9 OCT 2025 · 09:08 UTC | 119 keys | 107 keys |
| 19 OCT 2025 · 20:56 UTC | 113 keys | 102 keys |
| 25 OCT 2025 · 17:19 UTC | 108 keys | 96.8 keys |
| 10 NOV 2025 · 01:19 UTC | 106 keys | 95.2 keys |
| 2 MAR 2026 · 16:41 UTC | 150 keys | 105 keys |
| 8 MAR 2026 · 04:43 UTC | 149 keys | 106 keys |
| 17 MAR 2026 · 10:07 UTC | 158 keys | 113 keys |
| 2 APR 2026 · 22:31 UTC | 162 keys | 70.8 keys |
| 11 APR 2026 · 12:31 UTC | 159 keys | 62.6 keys |
| 21 APR 2026 · 22:29 UTC | 157 keys | 68.4 keys |
| 1 MAY 2026 · 10:30 UTC | 146 keys | 91.0 keys |
| 15 MAY 2026 · 10:32 UTC | 155 keys | 115 keys |
| 24 MAY 2026 · 14:30 UTC | 154 keys | 118 keys |
| 1 JUN 2026 · 00:30 UTC | 156 keys | 120 keys |
| 8 JUN 2026 · 06:31 UTC | 142 keys | 119 keys |
| 15 JUN 2026 · 08:32 UTC | 138 keys | 78.4 keys |
| 23 JUN 2026 · 15:13 UTC | 88.0 keys | 76.5 keys |
| 1 JUL 2026 · 11:13 UTC | 80.8 keys | 70.3 keys |
| 10 JUL 2026 · 08:44 UTC | 81.4 keys | 70.8 keys |
| 18 JUL 2026 · 12:44 UTC | 72.8 keys | 63.2 keys |
| 31 JUL 2026 · 08:44 UTC | 76.5 keys | 66.6 keys |
| 15 AUG 2026 · 03:11 UTC | 76.3 keys | 66.3 keys |
Price history in numbers
24 readings since 25 Sep 2025The price has not been re-read inside the last 30 days. Over a year it ranged from 72.8 keys to 162 keys (down 32.4%). Today's 76.3 keys sits at the bottom of its range: the lowest we have recorded is 72.8 keys (18 Jul 2026) and the highest 162 keys (2 Apr 2026). The price has moved 23 times since we began recording it — about once every 14 days.
| Window | Low | High | Change | Moves | Readings |
|---|---|---|---|---|---|
| 90 days | 72.8 keys | 76.5 keys | +4.8% | 2 | 3 |
| a year | 72.8 keys | 162 keys | −32.4% | 20 | 21 |
Details
| SKU | 30708;5;u9 |
|---|---|
| Last price change | 2026-08-15 03:11 UTC |
| Key rate when recorded | 64.33 ref |
Same effect, other items
the effect across the catalogue| Item | Value | Updated |
|---|---|---|
| 7,000 keys | 11mo ago | |
| 5,800 keys | 11mo ago | |
| 2,100 keys | 11mo ago | |
| 1,337 keys | 11mo ago | |
| 1,200 keys | 11mo ago | |
| 1,200 keys | 11mo ago | |
| 1,050 keys | 11mo ago | |
| 1,000 keys | 11mo ago | |
| 1,011 keys | 13d ago | |
| 900 keys | 13d ago |
Other effects on the Hellmet
same item, different effect| Item | Value | Updated |
|---|---|---|
| 1,050 keys | 11mo ago | |
| 481 keys | 11mo ago | |
| 420 keys | 11mo ago | |
| 268 keys | 2mo ago | |
| 256 keys | 15d ago | |
| 249 keys | 2mo ago | |
| 210 keys | 11mo ago | |
| 200 keys | 11mo ago | |
| 200 keys | 11mo ago | |
| 182 keys | 14d ago |
Priced similarly
across the catalogue| Item | Value | Updated |
|---|---|---|
| 79.1 keys | 1mo ago | |
| 77.5 keys | 12d ago | |
| 78.7 keys | 12d ago | |
| 77.5 keys | 12d ago | |
| 79.5 keys | 12d ago | |
| 77.5 keys | 12d ago | |
| 76.3 keys | 4mo ago | |
| 78.7 keys | 12d ago |