Community price on backpack.tf: 22.0–26.0 keys, last changed 2017-02-09 (9.7y ago). The live quote above, 48.3 keys, is 119% 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.
Price history
68 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.
Phosphorous Firewall Helmet sell price, 2025-09-25 to 2026-10-06: 68 observations, from 26.5 keys to 46.7 keys. Sampled evenly across the range.
Observed (UTC)
Sell
Buy
25 SEP 2025 · 03:29 UTC
26.5 keys
19.1 keys
9 OCT 2025 · 08:31 UTC
26.3 keys
19.2 keys
19 OCT 2025 · 20:18 UTC
25.0 keys
18.3 keys
10 NOV 2025 · 00:40 UTC
25.8 keys
18.9 keys
1 AUG 2026 · 12:43 UTC
36.9 keys
32.0 keys
21 AUG 2026 · 06:08 UTC
75.3 keys
65.4 keys
21 AUG 2026 · 18:09 UTC
77.6 keys
67.5 keys
22 AUG 2026 · 20:08 UTC
82.8 keys
72.0 keys
23 AUG 2026 · 20:09 UTC
83.7 keys
72.8 keys
24 AUG 2026 · 08:08 UTC
83.6 keys
72.7 keys
25 AUG 2026 · 08:09 UTC
85.4 keys
74.3 keys
26 AUG 2026 · 08:08 UTC
87.0 keys
75.6 keys
27 AUG 2026 · 10:08 UTC
87.9 keys
76.5 keys
27 AUG 2026 · 22:09 UTC
88.1 keys
76.6 keys
29 AUG 2026 · 00:09 UTC
88.5 keys
77.0 keys
30 AUG 2026 · 00:09 UTC
88.6 keys
77.1 keys
30 AUG 2026 · 12:08 UTC
90.5 keys
78.7 keys
31 AUG 2026 · 12:09 UTC
88.5 keys
77.0 keys
1 SEP 2026 · 12:08 UTC
87.0 keys
75.7 keys
2 SEP 2026 · 12:08 UTC
85.8 keys
74.6 keys
3 SEP 2026 · 00:08 UTC
86.6 keys
75.3 keys
4 SEP 2026 · 00:08 UTC
86.9 keys
75.6 keys
5 SEP 2026 · 00:08 UTC
86.0 keys
74.7 keys
6 SEP 2026 · 00:09 UTC
86.0 keys
74.8 keys
6 SEP 2026 · 12:08 UTC
89.2 keys
77.6 keys
7 SEP 2026 · 12:08 UTC
88.4 keys
76.9 keys
8 SEP 2026 · 14:07 UTC
86.5 keys
75.2 keys
9 SEP 2026 · 02:08 UTC
86.0 keys
74.8 keys
10 SEP 2026 · 02:08 UTC
86.8 keys
75.5 keys
11 SEP 2026 · 02:09 UTC
87.1 keys
75.8 keys
12 SEP 2026 · 02:08 UTC
87.2 keys
75.8 keys
12 SEP 2026 · 14:08 UTC
87.4 keys
76.0 keys
13 SEP 2026 · 14:07 UTC
86.9 keys
75.6 keys
14 SEP 2026 · 14:08 UTC
86.0 keys
74.8 keys
15 SEP 2026 · 02:07 UTC
87.6 keys
76.2 keys
18 SEP 2026 · 20:07 UTC
88.1 keys
76.6 keys
21 SEP 2026 · 14:08 UTC
88.8 keys
77.2 keys
22 SEP 2026 · 16:09 UTC
88.9 keys
77.3 keys
30 SEP 2026 · 20:09 UTC
48.3 keys
42.0 keys
6 OCT 2026 · 11:09 UTC
46.7 keys
40.6 keys
Price history in numbers
68 readings since 25 Sep 2025
Over the last 30 days the Phosphorous Firewall Helmet's sell price ranged from 46.7 keys to 89.4 keys and is down 46.2% after 12 moves. Over a year it ranged from 23.8 keys to 90.5 keys (up 87.0%). Today's 46.7 keys sits in the middle of its range: the lowest we have recorded is 23.8 keys (25 Oct 2025) and the highest 90.5 keys (30 Aug 2026). The price has moved 67 times since we began recording it — about once every 6 days.
Flip-Flops