Community price on backpack.tf: 87.0–90.0 keys, last changed 2025-06-28 (1.2y ago). The live quote above, 80.2 keys, is 8% lower and last moved 3h 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
45 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 Engineer's Cap sell price, 2025-09-25 to 2026-09-05: 45 observations, from 91.2 keys to 80.2 keys. Sampled evenly across the range.
Observed (UTC)
Sell
Buy
25 SEP 2025 · 03:29 UTC
91.2 keys
72.2 keys
30 SEP 2025 · 20:09 UTC
92.2 keys
72.9 keys
9 OCT 2025 · 07:53 UTC
88.1 keys
76.7 keys
19 OCT 2025 · 19:39 UTC
83.8 keys
72.9 keys
9 NOV 2025 · 23:57 UTC
84.4 keys
73.5 keys
17 NOV 2025 · 04:31 UTC
11.8 keys
11.8 keys
15 FEB 2026 · 00:40 UTC
78.1 keys
65.3 keys
24 FEB 2026 · 08:39 UTC
71.6 keys
61.3 keys
2 MAR 2026 · 02:40 UTC
69.4 keys
60.2 keys
15 MAR 2026 · 22:06 UTC
66.9 keys
50.3 keys
23 MAR 2026 · 00:07 UTC
72.2 keys
64.1 keys
23 JUL 2026 · 02:45 UTC
42.9 keys
37.3 keys
3 AUG 2026 · 00:24 UTC
59.2 keys
51.4 keys
10 AUG 2026 · 03:11 UTC
59.7 keys
51.9 keys
19 AUG 2026 · 12:08 UTC
11.8 keys
10.2 keys
22 AUG 2026 · 10:08 UTC
50.4 keys
43.8 keys
22 AUG 2026 · 22:08 UTC
50.4 keys
43.8 keys
23 AUG 2026 · 10:08 UTC
50.5 keys
43.9 keys
23 AUG 2026 · 22:08 UTC
50.7 keys
44.1 keys
24 AUG 2026 · 10:08 UTC
50.8 keys
44.2 keys
25 AUG 2026 · 10:08 UTC
51.1 keys
44.4 keys
25 AUG 2026 · 22:09 UTC
51.0 keys
44.3 keys
26 AUG 2026 · 10:08 UTC
51.1 keys
44.4 keys
26 AUG 2026 · 22:09 UTC
51.3 keys
44.6 keys
27 AUG 2026 · 10:08 UTC
51.6 keys
44.9 keys
27 AUG 2026 · 22:09 UTC
52.0 keys
45.3 keys
28 AUG 2026 · 11:22 UTC
53.0 keys
46.1 keys
28 AUG 2026 · 22:09 UTC
53.7 keys
46.7 keys
29 AUG 2026 · 22:09 UTC
54.4 keys
47.3 keys
30 AUG 2026 · 10:08 UTC
55.7 keys
48.4 keys
30 AUG 2026 · 22:09 UTC
54.8 keys
47.6 keys
31 AUG 2026 · 10:09 UTC
54.9 keys
47.8 keys
1 SEP 2026 · 08:08 UTC
75.2 keys
65.4 keys
1 SEP 2026 · 20:08 UTC
75.8 keys
65.9 keys
2 SEP 2026 · 08:08 UTC
75.0 keys
65.2 keys
2 SEP 2026 · 22:07 UTC
76.8 keys
66.8 keys
3 SEP 2026 · 22:08 UTC
80.0 keys
69.6 keys
4 SEP 2026 · 10:08 UTC
81.5 keys
70.8 keys
4 SEP 2026 · 22:07 UTC
78.8 keys
68.5 keys
5 SEP 2026 · 16:08 UTC
80.2 keys
69.8 keys
Price history in numbers
45 readings since 25 Sep 2025
Over the last 30 days the Purple Energy Engineer's Cap's sell price ranged from 11.8 keys to 81.5 keys and is up 34.3% after 29 moves. Over a year it ranged from 11.8 keys to 92.2 keys (down 12.1%). Today's 80.2 keys sits in the upper third of its range: the lowest we have recorded is 11.8 keys (19 Aug 2026) and the highest 92.2 keys (30 Sep 2025). The price has moved 44 times since we began recording it — about once every 8 days.
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