← All Brain Interface variants

Frozen Fractals Brain Interface

✦ Frozen FractalsUnusual12d ago
Sell price
39 keys, 35 ref
Buy price
34 keys, 24.88 ref
In keys
39.6 keys
In USD
$86.65 at the Steam key rate

Community price on backpack.tf: 36.0 keys, last changed 2025-04-30 (1.5y ago). The live quote above, 39.6 keys, is 10% higher 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

56 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.

Frozen Fractals Brain Interface sell price, 2025-09-25 to 2026-10-08: 56 observations, from 37.3 keys to 21.2 keys. Sampled evenly across the range.
Observed (UTC)SellBuy
25 SEP 2025 · 03:29 UTC37.3 keys30.5 keys
30 SEP 2025 · 22:22 UTC37.2 keys30.5 keys
19 OCT 2025 · 21:48 UTC33.9 keys30.5 keys
25 OCT 2025 · 18:08 UTC32.2 keys29.0 keys
22 JUN 2026 · 17:13 UTC9.07 keys7.90 keys
30 JUL 2026 · 02:44 UTC9.67 keys8.43 keys
13 AUG 2026 · 13:12 UTC9.72 keys8.47 keys
21 AUG 2026 · 22:09 UTC22.4 keys19.5 keys
23 AUG 2026 · 02:09 UTC22.0 keys19.2 keys
25 AUG 2026 · 08:09 UTC9.71 keys8.44 keys
25 AUG 2026 · 20:10 UTC9.71 keys8.44 keys
26 AUG 2026 · 20:09 UTC9.72 keys8.46 keys
27 AUG 2026 · 08:09 UTC10.2 keys8.85 keys
27 AUG 2026 · 22:09 UTC10.2 keys8.83 keys
29 AUG 2026 · 10:09 UTC10.2 keys8.84 keys
30 AUG 2026 · 18:10 UTC10.2 keys8.86 keys
2 SEP 2026 · 12:09 UTC34.5 keys30.0 keys
3 SEP 2026 · 00:08 UTC37.4 keys32.5 keys
3 SEP 2026 · 18:10 UTC40.5 keys35.2 keys
4 SEP 2026 · 18:08 UTC41.3 keys35.9 keys
6 SEP 2026 · 06:09 UTC41.6 keys36.2 keys
9 SEP 2026 · 10:08 UTC9.97 keys8.67 keys
10 SEP 2026 · 00:09 UTC9.93 keys8.63 keys
11 SEP 2026 · 04:09 UTC9.97 keys8.66 keys
22 SEP 2026 · 20:10 UTC22.1 keys19.2 keys
24 SEP 2026 · 00:09 UTC21.7 keys18.8 keys
25 SEP 2026 · 06:08 UTC21.9 keys19.1 keys
25 SEP 2026 · 20:09 UTC21.6 keys18.8 keys
26 SEP 2026 · 18:08 UTC21.4 keys18.6 keys
28 SEP 2026 · 06:11 UTC9.64 keys8.38 keys
28 SEP 2026 · 22:08 UTC40.0 keys34.8 keys
29 SEP 2026 · 22:09 UTC40.1 keys34.8 keys
30 SEP 2026 · 12:09 UTC40.0 keys34.8 keys
1 OCT 2026 · 14:08 UTC39.6 keys34.4 keys
2 OCT 2026 · 02:09 UTC9.42 keys8.18 keys
2 OCT 2026 · 15:12 UTC9.52 keys8.27 keys
5 OCT 2026 · 19:10 UTC21.6 keys18.7 keys
6 OCT 2026 · 07:09 UTC21.6 keys18.7 keys
7 OCT 2026 · 11:09 UTC20.8 keys18.1 keys
8 OCT 2026 · 09:10 UTC21.2 keys18.5 keys

Price history in numbers

56 readings since 25 Sep 2025

Over the last 30 days the Frozen Fractals Brain Interface's sell price ranged from 9.42 keys to 40.3 keys and is down 7.1% after 22 moves. Over a year it ranged from 9.07 keys to 41.6 keys (down 37.3%). Today's 21.2 keys sits in the middle of its range: the lowest we have recorded is 9.07 keys (22 Jun 2026) and the highest 41.6 keys (6 Sep 2026). The price has moved 55 times since we began recording it — about once every 7 days.

WindowLowHighChangeMovesReadings
30 days9.42 keys40.3 keys−7.1%2223
90 days9.42 keys41.6 keys+119.7%4849
a year9.07 keys41.6 keys−37.3%5253

Details

SKU31049;5;u164
Last price change2026-10-01 14:08 UTC
Key rate when recorded61.78 ref

Same effect, other items

the effect across the catalogue

Other effects on the Brain Interface

same item, different effect

Priced similarly

across the catalogue