Community price on backpack.tf: 15.0 keys, last changed 2023-10-28 (3.0y ago). The live quote above, 9.26 keys, is 38% lower 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
53 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.
Fireflies Brain Interface sell price, 2025-09-25 to 2026-10-11: 53 observations, from 16.2 keys to 10.0 keys. Sampled evenly across the range.
Observed (UTC)
Sell
Buy
25 SEP 2025 · 03:29 UTC
16.2 keys
13.3 keys
30 SEP 2025 · 22:22 UTC
16.2 keys
13.3 keys
19 OCT 2025 · 21:48 UTC
14.8 keys
13.3 keys
25 OCT 2025 · 18:09 UTC
14.1 keys
12.7 keys
10 NOV 2025 · 02:03 UTC
14.4 keys
13.0 keys
29 JUN 2026 · 19:12 UTC
10.3 keys
8.94 keys
8 JUL 2026 · 13:12 UTC
10.4 keys
9.02 keys
23 JUL 2026 · 02:45 UTC
10.6 keys
9.19 keys
7 AUG 2026 · 09:13 UTC
10.7 keys
9.37 keys
11 AUG 2026 · 21:11 UTC
12.6 keys
10.9 keys
21 AUG 2026 · 06:08 UTC
15.5 keys
13.5 keys
22 AUG 2026 · 14:08 UTC
14.7 keys
12.8 keys
23 AUG 2026 · 04:09 UTC
14.2 keys
12.4 keys
24 AUG 2026 · 04:09 UTC
14.0 keys
12.2 keys
26 AUG 2026 · 08:09 UTC
12.4 keys
10.7 keys
27 AUG 2026 · 06:09 UTC
11.4 keys
9.93 keys
27 AUG 2026 · 18:09 UTC
11.8 keys
10.3 keys
30 AUG 2026 · 00:10 UTC
13.0 keys
11.3 keys
30 AUG 2026 · 12:09 UTC
12.1 keys
10.5 keys
31 AUG 2026 · 10:09 UTC
12.0 keys
10.4 keys
1 SEP 2026 · 18:08 UTC
15.4 keys
13.4 keys
2 SEP 2026 · 14:09 UTC
9.17 keys
7.97 keys
3 SEP 2026 · 04:08 UTC
9.18 keys
7.98 keys
4 SEP 2026 · 04:09 UTC
17.4 keys
15.1 keys
7 SEP 2026 · 10:08 UTC
12.4 keys
10.8 keys
8 SEP 2026 · 16:09 UTC
8.78 keys
7.63 keys
12 SEP 2026 · 22:08 UTC
16.1 keys
14.0 keys
18 SEP 2026 · 16:07 UTC
8.80 keys
7.65 keys
19 SEP 2026 · 18:08 UTC
13.1 keys
11.4 keys
28 SEP 2026 · 22:08 UTC
9.41 keys
8.19 keys
29 SEP 2026 · 16:11 UTC
9.36 keys
8.14 keys
30 SEP 2026 · 06:08 UTC
9.27 keys
8.06 keys
2 OCT 2026 · 02:09 UTC
9.23 keys
8.02 keys
4 OCT 2026 · 13:13 UTC
16.6 keys
14.4 keys
6 OCT 2026 · 13:09 UTC
9.04 keys
7.86 keys
7 OCT 2026 · 17:10 UTC
9.17 keys
7.98 keys
8 OCT 2026 · 05:11 UTC
9.18 keys
7.98 keys
9 OCT 2026 · 11:09 UTC
12.3 keys
10.7 keys
10 OCT 2026 · 17:10 UTC
10.1 keys
8.76 keys
11 OCT 2026 · 23:09 UTC
10.0 keys
8.69 keys
Price history in numbers
53 readings since 25 Sep 2025
Over the last 30 days the Fireflies Brain Interface's sell price ranged from 8.80 keys to 16.6 keys and is up 13.6% after 16 moves. Over a year it ranged from 8.78 keys to 17.8 keys (down 32.2%). Today's 10.0 keys sits in the lower third of its range: the lowest we have recorded is 8.78 keys (8 Sep 2026) and the highest 17.8 keys (3 Sep 2026). The price has moved 52 times since we began recording it — about once every 7 days.