Community price on backpack.tf: 248 keys, last changed 2025-07-17 (1.1y ago). The live quote above, 268 keys, is 8% higher and last moved 2d 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
42 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.
Kill-a-Watt Brainiac Hairpiece sell price, 2025-09-25 to 2026-09-04: 42 observations, from 253 keys to 268 keys. Sampled evenly across the range.
Observed (UTC)
Sell
Buy
25 SEP 2025 · 03:29 UTC
253 keys
207 keys
30 SEP 2025 · 21:07 UTC
252 keys
206 keys
9 OCT 2025 · 08:48 UTC
241 keys
217 keys
19 OCT 2025 · 20:37 UTC
229 keys
206 keys
25 OCT 2025 · 16:58 UTC
218 keys
196 keys
10 NOV 2025 · 00:59 UTC
224 keys
202 keys
22 JUN 2026 · 17:13 UTC
160 keys
139 keys
29 JUN 2026 · 01:14 UTC
179 keys
156 keys
5 JUL 2026 · 21:12 UTC
171 keys
149 keys
11 JUL 2026 · 20:44 UTC
172 keys
150 keys
29 JUL 2026 · 08:45 UTC
185 keys
161 keys
3 AUG 2026 · 00:24 UTC
193 keys
168 keys
10 AUG 2026 · 05:10 UTC
203 keys
177 keys
19 AUG 2026 · 14:10 UTC
203 keys
177 keys
22 AUG 2026 · 12:09 UTC
202 keys
176 keys
22 AUG 2026 · 16:08 UTC
203 keys
176 keys
22 AUG 2026 · 20:08 UTC
203 keys
177 keys
23 AUG 2026 · 00:08 UTC
203 keys
177 keys
23 AUG 2026 · 06:09 UTC
204 keys
177 keys
23 AUG 2026 · 10:08 UTC
203 keys
177 keys
23 AUG 2026 · 14:09 UTC
203 keys
177 keys
23 AUG 2026 · 18:09 UTC
204 keys
177 keys
23 AUG 2026 · 22:08 UTC
204 keys
177 keys
24 AUG 2026 · 00:09 UTC
204 keys
177 keys
24 AUG 2026 · 12:09 UTC
203 keys
177 keys
25 AUG 2026 · 08:09 UTC
204 keys
177 keys
26 AUG 2026 · 04:09 UTC
204 keys
177 keys
26 AUG 2026 · 20:09 UTC
203 keys
177 keys
28 AUG 2026 · 07:13 UTC
204 keys
177 keys
28 AUG 2026 · 22:09 UTC
204 keys
177 keys
30 AUG 2026 · 00:09 UTC
204 keys
178 keys
30 AUG 2026 · 16:07 UTC
204 keys
177 keys
31 AUG 2026 · 04:09 UTC
205 keys
178 keys
1 SEP 2026 · 02:09 UTC
253 keys
220 keys
1 SEP 2026 · 14:08 UTC
254 keys
221 keys
2 SEP 2026 · 02:08 UTC
253 keys
220 keys
2 SEP 2026 · 14:08 UTC
258 keys
224 keys
3 SEP 2026 · 02:08 UTC
262 keys
228 keys
3 SEP 2026 · 14:08 UTC
263 keys
228 keys
4 SEP 2026 · 02:08 UTC
268 keys
233 keys
Price history in numbers
42 readings since 25 Sep 2025
Over the last 30 days the Kill-a-Watt Brainiac Hairpiece's sell price ranged from 202 keys to 268 keys and is up 31.9% after 28 moves. Over a year it ranged from 160 keys to 268 keys (up 5.6%). Today's 268 keys sits at the top of its range: the lowest we have recorded is 160 keys (22 Jun 2026) and the highest 268 keys (4 Sep 2026). The price has moved 41 times since we began recording it — about once every 8 days.