Community price on backpack.tf: 105–125 keys, last changed 2026-07-21 (3mo ago). The live quote above, 127 keys, is 21% higher and last moved 11d 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
119 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.
Bubbling Brainiac Hairpiece sell price, 2025-09-25 to 2026-10-10: 119 observations, from 109 keys to 130 keys. Sampled evenly across the range.
Observed (UTC)
Sell
Buy
25 SEP 2025 · 03:29 UTC
109 keys
77.4 keys
19 OCT 2025 · 20:37 UTC
98.9 keys
77.3 keys
17 NOV 2025 · 06:37 UTC
131 keys
73.5 keys
1 APR 2026 · 20:30 UTC
110 keys
91.6 keys
1 JUL 2026 · 09:12 UTC
85.1 keys
74.0 keys
29 JUL 2026 · 10:44 UTC
113 keys
98.5 keys
21 AUG 2026 · 10:09 UTC
119 keys
103 keys
22 AUG 2026 · 06:08 UTC
119 keys
103 keys
22 AUG 2026 · 12:09 UTC
119 keys
103 keys
23 AUG 2026 · 00:08 UTC
119 keys
103 keys
23 AUG 2026 · 10:08 UTC
119 keys
104 keys
23 AUG 2026 · 22:08 UTC
119 keys
104 keys
25 AUG 2026 · 08:09 UTC
119 keys
104 keys
27 AUG 2026 · 12:08 UTC
120 keys
104 keys
29 AUG 2026 · 02:09 UTC
120 keys
105 keys
30 AUG 2026 · 14:10 UTC
120 keys
105 keys
1 SEP 2026 · 20:08 UTC
119 keys
103 keys
3 SEP 2026 · 10:08 UTC
118 keys
103 keys
4 SEP 2026 · 22:08 UTC
119 keys
103 keys
6 SEP 2026 · 10:08 UTC
125 keys
109 keys
10 SEP 2026 · 10:10 UTC
123 keys
107 keys
11 SEP 2026 · 22:08 UTC
123 keys
107 keys
13 SEP 2026 · 10:09 UTC
124 keys
108 keys
14 SEP 2026 · 22:08 UTC
125 keys
109 keys
16 SEP 2026 · 10:08 UTC
126 keys
110 keys
17 SEP 2026 · 22:09 UTC
128 keys
112 keys
20 SEP 2026 · 04:08 UTC
129 keys
112 keys
21 SEP 2026 · 20:09 UTC
129 keys
112 keys
24 SEP 2026 · 18:08 UTC
130 keys
113 keys
26 SEP 2026 · 18:08 UTC
130 keys
113 keys
29 SEP 2026 · 02:08 UTC
129 keys
112 keys
29 SEP 2026 · 10:08 UTC
130 keys
113 keys
30 SEP 2026 · 02:08 UTC
128 keys
111 keys
1 OCT 2026 · 00:09 UTC
127 keys
110 keys
2 OCT 2026 · 00:08 UTC
127 keys
111 keys
3 OCT 2026 · 13:09 UTC
129 keys
112 keys
5 OCT 2026 · 03:09 UTC
131 keys
114 keys
6 OCT 2026 · 09:10 UTC
131 keys
114 keys
8 OCT 2026 · 11:09 UTC
129 keys
113 keys
10 OCT 2026 · 03:10 UTC
130 keys
113 keys
Price history in numbers
119 readings since 25 Sep 2025
Over the last 30 days the Bubbling Brainiac Hairpiece's sell price ranged from 124 keys to 131 keys and is up 5.2% after 51 moves. Over a year it ranged from 85.1 keys to 143 keys (up 31.6%). Today's 130 keys sits in the upper third of its range: the lowest we have recorded is 85.1 keys (1 Jul 2026) and the highest 143 keys (22 Nov 2025). The price has moved 118 times since we began recording it — about once every 3 days.