← All Brainiac Hairpiece variants
Green Black Hole Brainiac Hairpiece
This price has not changed since 2026-08-13 03:12 UTC. It reflects the last observed trade rather than current market value, and this page is excluded from our sitemap for that reason.
Community price on backpack.tf: 360 keys, last changed 2020-03-30 (6.5y ago). The live quote above, 134 keys, is 63% lower and last moved 2mo 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
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.
| Observed (UTC) | Sell | Buy |
|---|---|---|
| 25 SEP 2025 · 03:29 UTC | 358 keys | 293 keys |
| 30 SEP 2025 · 21:07 UTC | 359 keys | 293 keys |
| 9 OCT 2025 · 08:48 UTC | 343 keys | 309 keys |
| 19 OCT 2025 · 20:37 UTC | 326 keys | 293 keys |
| 25 OCT 2025 · 16:58 UTC | 311 keys | 279 keys |
| 10 NOV 2025 · 00:59 UTC | 322 keys | 290 keys |
| 16 JUL 2026 · 02:43 UTC | 102 keys | 88.7 keys |
| 23 JUL 2026 · 16:45 UTC | 125 keys | 108 keys |
| 29 JUL 2026 · 08:45 UTC | 129 keys | 112 keys |
| 4 AUG 2026 · 07:12 UTC | 157 keys | 137 keys |
| 13 AUG 2026 · 03:12 UTC | 134 keys | 117 keys |
Price history in numbers
11 readings since 25 Sep 2025The price has not been re-read inside the last 30 days. Over a year it ranged from 102 keys to 326 keys (down 58.9%). Today's 134 keys sits in the lower third of its range: the lowest we have recorded is 102 keys (16 Jul 2026) and the highest 359 keys (30 Sep 2025). The price has moved 10 times since we began recording it — about once every 32 days.
| Window | Low | High | Change | Moves | Readings |
|---|---|---|---|---|---|
| 90 days | 102 keys | 157 keys | +31.4% | 4 | 5 |
| a year | 102 keys | 326 keys | −58.9% | 7 | 8 |
Details
| SKU | 590;5;u71 |
|---|---|
| Last price change | 2026-08-13 03:12 UTC |
| Key rate when recorded | 64.33 ref |
Same effect, other items
the effect across the catalogue| Item | Value | Updated |
|---|---|---|
| 8,620 keys | 11mo ago | |
| 2,377 keys | 25d ago | |
| 2,200 keys | 11mo ago | |
| 1,746 keys | 11mo ago | |
| 1,600 keys | 11mo ago | |
| 1,400 keys | 11mo ago | |
| 1,304 keys | 1mo ago | |
| 1,130 keys | 11mo ago | |
| 873 keys | 2mo ago | |
| 771 keys | 11mo ago |
Other effects on the Brainiac Hairpiece
same item, different effect| Item | Value | Updated |
|---|---|---|
| 690 keys | 2mo ago | |
| 432 keys | 2mo ago | |
| 431 keys | 2mo ago | |
| 300 keys | 15d ago | |
| 289 keys | 23d ago | |
| 283 keys | 12d ago | |
| 271 keys | 13d ago | |
| 243 keys | 2mo ago | |
| 241 keys | 2mo ago | |
| 237 keys | 15d ago |
Priced similarly
across the catalogue| Item | Value | Updated |
|---|---|---|
| 137 keys | 12d ago | |
| 134 keys | 2mo ago | |
| 137 keys | 11d ago | |
| 135 keys | 2mo ago | |
| 140 keys | 12d ago | |
| 133 keys | 15d ago | |
| 134 keys | 2mo ago | |
| 140 keys | 12d ago |