Community price on backpack.tf: 248 keys, last changed 2025-07-17 (1.2y ago). The live quote above, 283 keys, is 14% 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
102 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 2026-10-09: 102 observations, from 253 keys to 291 keys. Sampled evenly across the range.
Observed (UTC)
Sell
Buy
25 SEP 2025 · 03:29 UTC
253 keys
207 keys
19 OCT 2025 · 20:37 UTC
229 keys
206 keys
10 NOV 2025 · 00:59 UTC
224 keys
201 keys
5 JUL 2026 · 21:12 UTC
171 keys
148 keys
19 JUL 2026 · 22:44 UTC
178 keys
155 keys
10 AUG 2026 · 05:10 UTC
203 keys
176 keys
22 AUG 2026 · 16:08 UTC
203 keys
176 keys
23 AUG 2026 · 00:08 UTC
203 keys
176 keys
23 AUG 2026 · 14:09 UTC
203 keys
176 keys
23 AUG 2026 · 22:08 UTC
203 keys
177 keys
25 AUG 2026 · 08:09 UTC
203 keys
177 keys
26 AUG 2026 · 20:09 UTC
203 keys
177 keys
29 AUG 2026 · 12:09 UTC
203 keys
177 keys
31 AUG 2026 · 04:09 UTC
205 keys
178 keys
1 SEP 2026 · 14:08 UTC
254 keys
221 keys
3 SEP 2026 · 02:08 UTC
261 keys
227 keys
4 SEP 2026 · 02:08 UTC
267 keys
232 keys
7 SEP 2026 · 06:08 UTC
268 keys
233 keys
10 SEP 2026 · 00:08 UTC
267 keys
232 keys
11 SEP 2026 · 10:08 UTC
269 keys
234 keys
12 SEP 2026 · 22:07 UTC
273 keys
238 keys
13 SEP 2026 · 22:08 UTC
276 keys
240 keys
15 SEP 2026 · 10:08 UTC
275 keys
239 keys
16 SEP 2026 · 22:08 UTC
280 keys
244 keys
17 SEP 2026 · 22:09 UTC
280 keys
243 keys
19 SEP 2026 · 20:08 UTC
279 keys
243 keys
20 SEP 2026 · 22:11 UTC
281 keys
244 keys
22 SEP 2026 · 10:08 UTC
283 keys
246 keys
23 SEP 2026 · 22:10 UTC
284 keys
247 keys
24 SEP 2026 · 22:09 UTC
286 keys
249 keys
26 SEP 2026 · 10:08 UTC
287 keys
249 keys
27 SEP 2026 · 12:08 UTC
290 keys
252 keys
29 SEP 2026 · 00:08 UTC
286 keys
249 keys
30 SEP 2026 · 00:08 UTC
284 keys
247 keys
1 OCT 2026 · 12:08 UTC
283 keys
246 keys
4 OCT 2026 · 09:09 UTC
291 keys
253 keys
5 OCT 2026 · 11:09 UTC
292 keys
254 keys
7 OCT 2026 · 03:09 UTC
290 keys
253 keys
8 OCT 2026 · 03:10 UTC
290 keys
252 keys
9 OCT 2026 · 17:10 UTC
291 keys
253 keys
Price history in numbers
102 readings since 25 Sep 2025
Over the last 30 days the Kill-a-Watt Brainiac Hairpiece's sell price ranged from 273 keys to 293 keys and is up 6.4% after 48 moves. Over a year it ranged from 160 keys to 293 keys (up 27.1%). Today's 291 keys sits at the top of its range: the lowest we have recorded is 160 keys (22 Jun 2026) and the highest 293 keys (4 Oct 2026). The price has moved 101 times since we began recording it — about once every 4 days.
Collector's Machina