Community price on backpack.tf: 60.0–77.0 keys, last changed 2025-10-28 (10mo ago). The live quote above, 75.4 keys, is inside the community’s range and last moved 6h 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: $214.32 — the lowest of one listing for the Purple Energy effect when we looked on 2026-09-02 01:28 UTC (4d 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 75 keys, 27.66 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 Bonk Helm”, with no effect in the name — the effect comes from the individual listing.
Price history
56 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.
Purple Energy Bonk Helm sell price, 2025-09-25 to 2026-09-05: 56 observations, from 53.6 keys to 75.4 keys. Sampled evenly across the range.
Observed (UTC)
Sell
Buy
25 SEP 2025 · 03:29 UTC
53.6 keys
43.8 keys
30 SEP 2025 · 20:14 UTC
52.5 keys
42.9 keys
19 OCT 2025 · 19:44 UTC
47.7 keys
42.9 keys
25 OCT 2025 · 16:01 UTC
45.4 keys
40.9 keys
10 DEC 2025 · 10:42 UTC
67.1 keys
58.8 keys
8 JAN 2026 · 07:34 UTC
62.1 keys
55.1 keys
18 JAN 2026 · 23:23 UTC
57.9 keys
48.3 keys
31 MAR 2026 · 22:29 UTC
68.2 keys
55.3 keys
5 APR 2026 · 06:29 UTC
68.2 keys
56.2 keys
23 APR 2026 · 22:30 UTC
64.0 keys
52.8 keys
11 MAY 2026 · 16:30 UTC
61.4 keys
56.2 keys
22 JUN 2026 · 17:13 UTC
67.1 keys
58.3 keys
29 JUN 2026 · 03:14 UTC
70.6 keys
61.3 keys
5 JUL 2026 · 23:12 UTC
68.1 keys
59.2 keys
19 JUL 2026 · 22:44 UTC
76.6 keys
66.6 keys
29 JUL 2026 · 00:45 UTC
82.1 keys
71.4 keys
10 AUG 2026 · 01:11 UTC
88.5 keys
77.0 keys
21 AUG 2026 · 06:08 UTC
52.1 keys
45.3 keys
21 AUG 2026 · 18:09 UTC
52.1 keys
45.3 keys
22 AUG 2026 · 18:09 UTC
60.0 keys
52.2 keys
23 AUG 2026 · 06:09 UTC
61.2 keys
53.2 keys
24 AUG 2026 · 06:09 UTC
63.1 keys
54.8 keys
24 AUG 2026 · 18:09 UTC
63.8 keys
55.5 keys
25 AUG 2026 · 06:08 UTC
64.3 keys
55.9 keys
26 AUG 2026 · 06:09 UTC
65.7 keys
57.1 keys
26 AUG 2026 · 18:08 UTC
66.9 keys
58.1 keys
27 AUG 2026 · 18:08 UTC
68.3 keys
59.4 keys
28 AUG 2026 · 07:13 UTC
69.0 keys
60.0 keys
28 AUG 2026 · 18:09 UTC
69.5 keys
60.4 keys
29 AUG 2026 · 18:10 UTC
70.4 keys
61.3 keys
30 AUG 2026 · 06:09 UTC
71.2 keys
61.9 keys
31 AUG 2026 · 06:09 UTC
71.4 keys
62.1 keys
31 AUG 2026 · 18:09 UTC
71.5 keys
62.1 keys
1 SEP 2026 · 18:08 UTC
71.8 keys
62.4 keys
2 SEP 2026 · 06:08 UTC
70.6 keys
61.4 keys
2 SEP 2026 · 18:08 UTC
71.5 keys
62.2 keys
3 SEP 2026 · 18:09 UTC
75.1 keys
65.3 keys
4 SEP 2026 · 06:08 UTC
74.7 keys
64.9 keys
5 SEP 2026 · 06:07 UTC
74.7 keys
65.0 keys
5 SEP 2026 · 18:08 UTC
75.4 keys
65.6 keys
Price history in numbers
56 readings since 25 Sep 2025
Over the last 30 days the Purple Energy Bonk Helm's sell price ranged from 52.1 keys to 88.5 keys and is down 14.8% after 32 moves. Over a year it ranged from 45.4 keys to 88.5 keys (up 40.8%). Today's 75.4 keys sits in the upper third of its range: the lowest we have recorded is 45.4 keys (25 Oct 2025) and the highest 88.5 keys (10 Aug 2026). The price has moved 54 times since we began recording it — about once every 6 days.