This price has not changed since 2026-06-16 20:11 UTC. It reflects the last observed trade rather than current market value, and this page is excluded from our sitemap for that reason.
Sell price
52 keys
Buy price
26 keys, 18.22 ref
In keys
52.0 keys
In USD
$117.52 at the Steam key rate
Community price on backpack.tf: 25.0–28.0 keys, last changed 2021-05-26 (5.3y ago). The live quote above, 52.0 keys, is 108% higher and last moved 3mo 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
28 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 Brain Interface sell price, 2025-09-25 to 2026-06-16: 28 observations, from 27.8 keys to 52.0 keys.
Observed (UTC)
Sell
Buy
25 SEP 2025 · 03:29 UTC
27.8 keys
20.3 keys
30 SEP 2025 · 22:22 UTC
28.8 keys
20.3 keys
9 OCT 2025 · 09:55 UTC
27.5 keys
21.3 keys
19 OCT 2025 · 21:48 UTC
26.2 keys
20.3 keys
25 OCT 2025 · 18:08 UTC
24.9 keys
19.4 keys
10 NOV 2025 · 02:03 UTC
26.4 keys
20.5 keys
19 NOV 2025 · 10:45 UTC
49.9 keys
39.9 keys
23 NOV 2025 · 22:50 UTC
55.2 keys
43.3 keys
23 DEC 2025 · 17:13 UTC
55.8 keys
22.1 keys
1 JAN 2026 · 16:51 UTC
53.4 keys
29.9 keys
10 JAN 2026 · 17:40 UTC
49.2 keys
30.8 keys
18 JAN 2026 · 23:27 UTC
45.0 keys
35.2 keys
19 FEB 2026 · 10:42 UTC
48.2 keys
38.3 keys
22 FEB 2026 · 06:42 UTC
45.3 keys
36.4 keys
5 MAR 2026 · 16:44 UTC
44.5 keys
24.1 keys
8 MAR 2026 · 04:43 UTC
44.1 keys
35.7 keys
15 MAR 2026 · 18:08 UTC
43.5 keys
35.3 keys
26 MAR 2026 · 16:07 UTC
46.7 keys
38.0 keys
2 APR 2026 · 22:32 UTC
47.8 keys
38.9 keys
12 APR 2026 · 08:31 UTC
47.1 keys
38.3 keys
20 APR 2026 · 12:31 UTC
48.0 keys
39.2 keys
1 MAY 2026 · 06:30 UTC
44.5 keys
36.5 keys
9 MAY 2026 · 04:33 UTC
47.3 keys
38.8 keys
20 MAY 2026 · 20:33 UTC
47.0 keys
38.5 keys
25 MAY 2026 · 02:31 UTC
46.8 keys
38.4 keys
1 JUN 2026 · 08:32 UTC
47.4 keys
39.0 keys
9 JUN 2026 · 18:34 UTC
46.8 keys
38.5 keys
16 JUN 2026 · 20:11 UTC
52.0 keys
26.3 keys
Price history in numbers
28 readings since 25 Sep 2025
The price has not been re-read inside the last 30 days. Over a year it ranged from 24.9 keys to 55.8 keys (up 87.1%). Today's 52.0 keys sits in the upper third of its range: the lowest we have recorded is 24.9 keys (25 Oct 2025) and the highest 55.8 keys (23 Dec 2025). The price has moved 27 times since we began recording it — about once every 10 days.