Community price on backpack.tf: 165 keys, last changed 2024-03-28 (2.4y ago). The live quote above, 122 keys, is 26% lower and last moved 10h 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
22 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 Data Mining Light sell price, 2025-09-25 to 2026-09-05: 22 observations, from 171 keys to 122 keys.
Observed (UTC)
Sell
Buy
25 SEP 2025 · 03:29 UTC
171 keys
140 keys
30 SEP 2025 · 21:06 UTC
171 keys
140 keys
9 OCT 2025 · 08:47 UTC
164 keys
147 keys
19 OCT 2025 · 20:35 UTC
156 keys
140 keys
25 OCT 2025 · 16:57 UTC
148 keys
133 keys
10 NOV 2025 · 00:58 UTC
152 keys
137 keys
23 JUN 2026 · 07:14 UTC
108 keys
93.9 keys
29 JUN 2026 · 07:13 UTC
113 keys
98.0 keys
5 JUL 2026 · 17:11 UTC
106 keys
91.8 keys
12 JUL 2026 · 22:44 UTC
107 keys
93.1 keys
19 JUL 2026 · 18:44 UTC
111 keys
96.8 keys
29 JUL 2026 · 08:45 UTC
115 keys
100 keys
3 AUG 2026 · 00:24 UTC
121 keys
105 keys
10 AUG 2026 · 11:10 UTC
120 keys
104 keys
19 AUG 2026 · 06:33 UTC
69.8 keys
60.7 keys
28 AUG 2026 · 03:04 UTC
9.82 keys
8.54 keys
31 AUG 2026 · 06:09 UTC
70.3 keys
61.1 keys
2 SEP 2026 · 08:08 UTC
117 keys
102 keys
2 SEP 2026 · 20:08 UTC
119 keys
104 keys
4 SEP 2026 · 04:08 UTC
108 keys
94.2 keys
4 SEP 2026 · 16:08 UTC
121 keys
105 keys
5 SEP 2026 · 06:08 UTC
122 keys
106 keys
Price history in numbers
22 readings since 25 Sep 2025
Over the last 30 days the Phosphorous Data Mining Light's sell price ranged from 9.82 keys to 122 keys and is up 1.6% after 8 moves. Over a year it ranged from 9.82 keys to 171 keys (down 28.8%). Today's 122 keys sits in the upper third of its range: the lowest we have recorded is 9.82 keys (28 Aug 2026) and the highest 171 keys (25 Sep 2025). The price has moved 21 times since we began recording it — about once every 16 days.