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Kill-a-Watt Law

Kill-a-WattUnusual1d ago
Sell price
32 keys, 3.88 ref
Buy price
27 keys, 56.33 ref
In keys
32.1 keys
In USD
$72.78 at the Steam key rate

Community price on backpack.tf: 35.0–38.0 keys, last changed 2024-08-13 (2.1y ago). The live quote above, 32.1 keys, is 8% lower and last moved 1d 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 1h ago.

Price history

39 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 Law sell price, 2025-09-25 to 2026-09-04: 39 observations, from 40.0 keys to 32.1 keys.
Observed (UTC)SellBuy
25 SEP 2025 · 03:29 UTC40.0 keys29.4 keys
30 SEP 2025 · 21:08 UTC40.0 keys30.2 keys
9 OCT 2025 · 08:50 UTC38.2 keys31.7 keys
19 OCT 2025 · 20:38 UTC36.4 keys30.2 keys
25 OCT 2025 · 17:00 UTC34.6 keys28.8 keys
10 NOV 2025 · 01:01 UTC36.8 keys30.6 keys
22 NOV 2025 · 12:38 UTC27.9 keys24.5 keys
1 FEB 2026 · 23:44 UTC32.0 keys21.6 keys
10 FEB 2026 · 08:42 UTC33.1 keys22.5 keys
1 JUN 2026 · 12:30 UTC32.2 keys27.5 keys
8 JUN 2026 · 00:31 UTC31.8 keys27.4 keys
15 JUN 2026 · 00:31 UTC31.5 keys27.6 keys
22 JUN 2026 · 00:11 UTC33.6 keys30.0 keys
5 JUL 2026 · 21:12 UTC21.0 keys18.3 keys
12 JUL 2026 · 22:44 UTC24.5 keys21.3 keys
19 JUL 2026 · 22:44 UTC28.1 keys24.4 keys
29 JUL 2026 · 00:45 UTC30.8 keys26.8 keys
3 AUG 2026 · 00:24 UTC32.3 keys28.1 keys
10 AUG 2026 · 15:11 UTC32.5 keys28.3 keys
21 AUG 2026 · 00:09 UTC32.9 keys28.6 keys
21 AUG 2026 · 12:08 UTC32.8 keys28.5 keys
22 AUG 2026 · 00:08 UTC32.9 keys28.6 keys
22 AUG 2026 · 12:09 UTC32.9 keys28.6 keys
23 AUG 2026 · 00:08 UTC32.9 keys28.6 keys
23 AUG 2026 · 12:08 UTC32.9 keys28.6 keys
24 AUG 2026 · 00:09 UTC33.1 keys28.8 keys
24 AUG 2026 · 12:09 UTC32.9 keys28.6 keys
25 AUG 2026 · 04:09 UTC32.9 keys28.6 keys
25 AUG 2026 · 16:09 UTC33.0 keys28.7 keys
26 AUG 2026 · 04:09 UTC33.0 keys28.7 keys
26 AUG 2026 · 16:09 UTC33.0 keys28.7 keys
27 AUG 2026 · 04:10 UTC33.0 keys28.7 keys
27 AUG 2026 · 18:08 UTC33.0 keys28.7 keys
28 AUG 2026 · 07:13 UTC33.0 keys28.7 keys
28 AUG 2026 · 18:09 UTC33.0 keys28.7 keys
29 AUG 2026 · 14:09 UTC33.0 keys28.7 keys
30 AUG 2026 · 22:09 UTC33.0 keys28.7 keys
31 AUG 2026 · 16:09 UTC32.7 keys28.5 keys
4 SEP 2026 · 12:08 UTC32.1 keys27.9 keys

Price history in numbers

39 readings since 25 Sep 2025

Over the last 30 days the Kill-a-Watt Law's sell price ranged from 32.1 keys to 33.1 keys and is down 1.5% after 20 moves. Over a year it ranged from 21.0 keys to 40.0 keys (down 19.8%). Today's 32.1 keys sits in the middle of its range: the lowest we have recorded is 21.0 keys (5 Jul 2026) and the highest 40.0 keys (25 Sep 2025). The price has moved 38 times since we began recording it — about once every 9 days.

WindowLowHighChangeMovesReadings
30 days32.1 keys33.1 keys−1.5%2021
90 days21.0 keys33.6 keys+1.0%2829
a year21.0 keys40.0 keys−19.8%3839

Details

SKU30362;5;u56
Last price change2026-09-04 12:08 UTC
Key rate when recorded62.33 ref

Same effect, other items

the effect across the catalogue

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