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Kill-a-Watt Bottle Cap

Kill-a-WattUnusual22h ago
Sell price
20 keys, 56.55 ref
Buy price
18 keys, 10.11 ref
In keys
20.9 keys
In USD
$47.25 at the Steam key rate

Community price on backpack.tf: 25.0 keys, last changed 2024-03-30 (2.4y ago). The live quote above, 20.9 keys, is 16% lower and last moved 22h 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

62 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 Bottle Cap sell price, 2025-09-25 to 2026-09-04: 62 observations, from 25.6 keys to 20.9 keys. Sampled evenly across the range.
Observed (UTC)SellBuy
25 SEP 2025 · 03:29 UTC25.6 keys21.0 keys
9 OCT 2025 · 09:55 UTC24.5 keys22.0 keys
19 OCT 2025 · 21:47 UTC23.3 keys21.0 keys
10 NOV 2025 · 02:02 UTC23.6 keys21.2 keys
22 NOV 2025 · 12:45 UTC24.3 keys19.5 keys
10 DEC 2025 · 12:52 UTC24.5 keys20.3 keys
23 DEC 2025 · 13:14 UTC30.7 keys20.3 keys
3 JAN 2026 · 18:55 UTC23.8 keys19.7 keys
22 JAN 2026 · 07:45 UTC21.6 keys16.8 keys
30 JAN 2026 · 07:44 UTC21.4 keys18.4 keys
17 FEB 2026 · 20:40 UTC21.4 keys18.5 keys
22 FEB 2026 · 06:42 UTC20.0 keys17.3 keys
15 MAR 2026 · 22:08 UTC19.1 keys12.3 keys
26 MAR 2026 · 18:08 UTC20.5 keys14.1 keys
4 APR 2026 · 02:30 UTC21.0 keys11.8 keys
16 APR 2026 · 16:30 UTC20.6 keys8.78 keys
7 MAY 2026 · 16:34 UTC19.2 keys13.4 keys
17 MAY 2026 · 20:34 UTC20.3 keys14.3 keys
24 MAY 2026 · 06:31 UTC20.2 keys14.3 keys
8 JUN 2026 · 10:31 UTC20.2 keys14.9 keys
15 JUN 2026 · 02:31 UTC19.6 keys14.9 keys
30 JUN 2026 · 05:12 UTC18.9 keys16.4 keys
8 JUL 2026 · 20:44 UTC18.0 keys15.6 keys
29 JUL 2026 · 02:45 UTC19.4 keys16.9 keys
10 AUG 2026 · 17:11 UTC20.4 keys17.8 keys
20 AUG 2026 · 14:08 UTC20.2 keys17.5 keys
21 AUG 2026 · 22:09 UTC20.4 keys17.8 keys
22 AUG 2026 · 12:09 UTC20.4 keys17.7 keys
23 AUG 2026 · 04:09 UTC20.5 keys17.8 keys
24 AUG 2026 · 02:09 UTC20.6 keys17.9 keys
25 AUG 2026 · 02:09 UTC20.8 keys18.1 keys
25 AUG 2026 · 14:09 UTC20.9 keys18.1 keys
29 AUG 2026 · 04:09 UTC21.0 keys18.2 keys
30 AUG 2026 · 06:09 UTC21.1 keys18.3 keys
30 AUG 2026 · 18:10 UTC21.0 keys18.3 keys
31 AUG 2026 · 20:11 UTC20.9 keys18.2 keys
1 SEP 2026 · 08:09 UTC20.9 keys18.1 keys
2 SEP 2026 · 22:08 UTC20.8 keys18.1 keys
3 SEP 2026 · 12:10 UTC20.8 keys18.1 keys
4 SEP 2026 · 18:08 UTC20.9 keys18.2 keys

Price history in numbers

62 readings since 25 Sep 2025

Over the last 30 days the Kill-a-Watt Bottle Cap's sell price ranged from 20.2 keys to 21.1 keys and is up 2.4% after 23 moves. Over a year it ranged from 18.0 keys to 30.7 keys (down 18.5%). Today's 20.9 keys sits in the lower third of its range: the lowest we have recorded is 18.0 keys (8 Jul 2026) and the highest 30.7 keys (23 Dec 2025). The price has moved 60 times since we began recording it — about once every 6 days.

WindowLowHighChangeMovesReadings
30 days20.2 keys21.1 keys+2.4%2324
90 days18.0 keys21.1 keys+3.3%3132
a year18.0 keys30.7 keys−18.5%6062

Details

SKU31042;5;u56
Last price change2026-09-04 18:08 UTC
Key rate when recorded62.33 ref

Same effect, other items

the effect across the catalogue

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