Community price on backpack.tf: 22.0 keys, last changed 2015-04-21 (11.5y ago). The live quote above, 18.7 keys, is 15% lower and last moved 11d 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
63 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 Big Chief sell price, 2025-09-25 to 2026-10-13: 63 observations, from 23.6 keys to 20.8 keys. Sampled evenly across the range.
Observed (UTC)
Sell
Buy
25 SEP 2025 · 03:29 UTC
23.6 keys
19.3 keys
9 OCT 2025 · 08:42 UTC
21.6 keys
19.4 keys
19 OCT 2025 · 20:29 UTC
20.5 keys
18.4 keys
10 NOV 2025 · 00:53 UTC
20.0 keys
18.0 keys
22 JUN 2026 · 17:13 UTC
8.10 keys
7.04 keys
29 JUL 2026 · 12:46 UTC
12.2 keys
10.6 keys
20 AUG 2026 · 14:08 UTC
9.53 keys
8.29 keys
21 AUG 2026 · 22:09 UTC
15.0 keys
13.1 keys
24 AUG 2026 · 06:09 UTC
9.51 keys
8.27 keys
28 AUG 2026 · 11:22 UTC
9.55 keys
8.30 keys
30 AUG 2026 · 00:09 UTC
9.58 keys
8.33 keys
31 AUG 2026 · 06:09 UTC
9.53 keys
8.29 keys
6 SEP 2026 · 10:08 UTC
9.62 keys
8.37 keys
7 SEP 2026 · 14:08 UTC
9.55 keys
8.30 keys
8 SEP 2026 · 06:09 UTC
9.33 keys
8.11 keys
9 SEP 2026 · 12:09 UTC
9.29 keys
8.07 keys
12 SEP 2026 · 10:08 UTC
9.41 keys
8.18 keys
17 SEP 2026 · 10:09 UTC
12.9 keys
11.2 keys
23 SEP 2026 · 20:08 UTC
14.9 keys
13.0 keys
25 SEP 2026 · 00:08 UTC
15.9 keys
13.8 keys
26 SEP 2026 · 10:08 UTC
18.5 keys
16.0 keys
27 SEP 2026 · 00:08 UTC
18.6 keys
16.2 keys
28 SEP 2026 · 00:08 UTC
19.2 keys
16.7 keys
29 SEP 2026 · 00:08 UTC
19.0 keys
16.6 keys
29 SEP 2026 · 12:08 UTC
19.1 keys
16.6 keys
30 SEP 2026 · 12:08 UTC
18.9 keys
16.5 keys
1 OCT 2026 · 04:08 UTC
19.0 keys
16.5 keys
2 OCT 2026 · 13:12 UTC
20.2 keys
17.6 keys
3 OCT 2026 · 13:09 UTC
20.3 keys
17.6 keys
4 OCT 2026 · 03:09 UTC
20.2 keys
17.6 keys
5 OCT 2026 · 11:09 UTC
20.8 keys
18.1 keys
5 OCT 2026 · 23:09 UTC
20.8 keys
18.1 keys
7 OCT 2026 · 01:09 UTC
20.7 keys
18.0 keys
7 OCT 2026 · 13:09 UTC
20.8 keys
18.1 keys
8 OCT 2026 · 19:09 UTC
21.0 keys
18.2 keys
10 OCT 2026 · 01:10 UTC
21.0 keys
18.3 keys
10 OCT 2026 · 13:09 UTC
21.0 keys
18.3 keys
11 OCT 2026 · 13:08 UTC
21.0 keys
18.3 keys
12 OCT 2026 · 01:09 UTC
20.8 keys
18.1 keys
13 OCT 2026 · 01:08 UTC
20.8 keys
18.1 keys
Price history in numbers
63 readings since 25 Sep 2025
Over the last 30 days the Phosphorous Big Chief's sell price ranged from 9.55 keys to 21.0 keys and is up 72.3% after 36 moves. Over a year it ranged from 7.93 keys to 21.0 keys (up 1.6%). Today's 20.8 keys sits in the upper third of its range: the lowest we have recorded is 7.93 keys (20 Jul 2026) and the highest 23.6 keys (25 Sep 2025). The price has moved 62 times since we began recording it — about once every 6 days.