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Kill-a-Watt Professor's Peculiarity
This price has not changed since 2026-09-28 20:08 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: 12.0–15.0 keys, last changed 2020-12-10 (5.9y ago). The live quote above, 17.1 keys, is 43% higher and last moved 1mo 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 | 14.0 keys | 7.71 keys |
| 7 OCT 2025 · 16:19 UTC | 14.6 keys | 8.02 keys |
| 29 OCT 2025 · 20:01 UTC | 13.2 keys | 11.0 keys |
| 9 NOV 2025 · 22:27 UTC | 16.4 keys | 11.9 keys |
| 26 NOV 2025 · 04:47 UTC | 14.7 keys | 13.0 keys |
| 22 JAN 2026 · 15:43 UTC | 13.2 keys | 6.62 keys |
| 1 FEB 2026 · 23:43 UTC | 15.5 keys | 7.61 keys |
| 15 FEB 2026 · 22:39 UTC | 15.1 keys | 10.2 keys |
| 22 MAR 2026 · 22:06 UTC | 15.9 keys | 8.65 keys |
| 11 APR 2026 · 02:29 UTC | 16.4 keys | 7.38 keys |
| 5 JUL 2026 · 17:11 UTC | 10.5 keys | 9.15 keys |
| 26 JUL 2026 · 20:44 UTC | 13.1 keys | 11.3 keys |
| 14 AUG 2026 · 09:12 UTC | 17.7 keys | 15.4 keys |
| 24 AUG 2026 · 10:08 UTC | 7.61 keys | 6.62 keys |
| 30 AUG 2026 · 12:08 UTC | 16.7 keys | 14.5 keys |
| 31 AUG 2026 · 12:09 UTC | 17.2 keys | 14.9 keys |
| 1 SEP 2026 · 12:08 UTC | 17.3 keys | 15.0 keys |
| 3 SEP 2026 · 00:08 UTC | 17.6 keys | 15.3 keys |
| 4 SEP 2026 · 14:08 UTC | 17.5 keys | 15.3 keys |
| 6 SEP 2026 · 06:09 UTC | 17.5 keys | 15.3 keys |
| 7 SEP 2026 · 18:08 UTC | 17.9 keys | 15.6 keys |
| 10 SEP 2026 · 10:09 UTC | 17.8 keys | 15.5 keys |
| 11 SEP 2026 · 16:09 UTC | 17.9 keys | 15.6 keys |
| 13 SEP 2026 · 04:08 UTC | 18.0 keys | 15.6 keys |
| 14 SEP 2026 · 04:08 UTC | 18.2 keys | 15.8 keys |
| 15 SEP 2026 · 04:08 UTC | 18.3 keys | 15.9 keys |
| 16 SEP 2026 · 22:08 UTC | 18.6 keys | 16.2 keys |
| 20 SEP 2026 · 12:09 UTC | 16.9 keys | 14.7 keys |
| 20 SEP 2026 · 18:09 UTC | 16.9 keys | 14.7 keys |
| 21 SEP 2026 · 06:09 UTC | 17.5 keys | 15.2 keys |
| 21 SEP 2026 · 10:10 UTC | 17.7 keys | 15.4 keys |
| 21 SEP 2026 · 16:09 UTC | 17.6 keys | 15.3 keys |
| 25 SEP 2026 · 04:08 UTC | 18.2 keys | 15.8 keys |
| 28 SEP 2026 · 20:08 UTC | 17.1 keys | 14.9 keys |
| 10 OCT 2026 · 05:11 UTC | 18.4 keys | 16.0 keys |
| 15 OCT 2026 · 07:08 UTC | 15.3 keys | 13.3 keys |
| 19 OCT 2026 · 07:07 UTC | 17.3 keys | 15.0 keys |
| 21 OCT 2026 · 19:12 UTC | 17.3 keys | 15.5 keys |
| 23 OCT 2026 · 13:12 UTC | 17.3 keys | 16.4 keys |
| 4 NOV 2026 · 19:12 UTC | 16.9 keys | 16.1 keys |
Price history in numbers
92 readings since 25 Sep 2025Over the last 30 days the Kill-a-Watt Professor's Peculiarity's sell price ranged from 10.0 keys to 18.4 keys and is down 5.7% after 10 moves. Over a year it ranged from 7.61 keys to 18.7 keys (up 3.5%). Today's 16.9 keys sits in the upper third of its range: the lowest we have recorded is 7.61 keys (24 Aug 2026) and the highest 18.7 keys (17 Sep 2026). The price has moved 86 times since we began recording it — about once every 5 days.
| Window | Low | High | Change | Moves | Readings |
|---|---|---|---|---|---|
| 30 days | 10.0 keys | 18.4 keys | −5.7% | 10 | 14 |
| 90 days | 7.61 keys | 18.7 keys | −4.2% | 59 | 64 |
| a year | 7.61 keys | 18.7 keys | +3.5% | 79 | 85 |
Details
| SKU | 384;5;u56 |
|---|---|
| Last price change | 2026-09-28 20:08 UTC |
| Key rate when recorded | 64.33 ref |
Same effect, other items
the effect across the catalogue| Item | Value | Updated |
|---|---|---|
| 1,111 keys | 12mo ago | |
| 1,100 keys | 12mo ago | |
| 1,100 keys | 12mo ago | |
| 760 keys | 1mo ago | |
| 387 keys | 1mo ago | |
| 303 keys | 1mo ago | |
| 283 keys | 1mo ago | |
| 283 keys | 1mo ago | |
| 261 keys | 1mo ago | |
| 265 keys | 1mo ago |
Other effects on the Professor's Peculiarity
same item, different effect| Item | Value | Updated |
|---|---|---|
| 1,250 keys | 12mo ago | |
| 486 keys | 3mo ago | |
| 361 keys | 12mo ago | |
| 298 keys | 4mo ago | |
| 283 keys | 8mo ago | |
| 275 keys | 3mo ago | |
| 133 keys | 1mo ago | |
| 132 keys | 1mo ago | |
| 122 keys | 1mo ago | |
| 116 keys | 2mo ago |
Priced similarly
across the catalogue| Item | Value | Updated |
|---|---|---|
| 17.6 keys | 1mo ago | |
| 17.5 keys | 2mo ago | |
| 17.1 keys | 3mo ago | |
| 17.1 keys | 3mo ago | |
| 17.1 keys | 1mo ago | |
| 17.7 keys | 1mo ago | |
| 17.3 keys | 1mo ago | |
| 17.3 keys | 1mo ago |