Community price on backpack.tf: 26.0 keys, last changed 2026-02-05 (7mo ago). The live quote above, 25.5 keys, is 2% lower and last moved 6d 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.
Steam Market asking price: $438.64 — the lowest of one listing for the Kill-a-Watt effect when we looked on 2026-09-03 01:21 UTC (3d ago). This is what a seller is asking, not what anything sold for. Steam pays out in Steam wallet funds, not cash, and Valve takes roughly 15% at the till — so asking prices there run well above the 25 keys, 32.22 ref shown above, which comes from the keys-and-metal market on backpack.tf. The two are different markets and are never blended. Steam lists the item as “Unusual Cotton Head”, with no effect in the name — the effect comes from the individual listing.
Price history
52 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 Cotton Head sell price, 2025-09-25 to 2026-08-30: 52 observations, from 31.0 keys to 25.5 keys. Sampled evenly across the range.
Observed (UTC)
Sell
Buy
25 SEP 2025 · 03:29 UTC
31.0 keys
20.4 keys
30 SEP 2025 · 21:01 UTC
30.9 keys
20.4 keys
19 OCT 2025 · 20:30 UTC
28.1 keys
20.4 keys
29 OCT 2025 · 00:01 UTC
22.0 keys
12.5 keys
2 NOV 2025 · 22:32 UTC
22.2 keys
13.4 keys
19 NOV 2025 · 22:42 UTC
22.5 keys
16.1 keys
23 NOV 2025 · 10:39 UTC
24.1 keys
19.9 keys
2 DEC 2025 · 04:52 UTC
23.4 keys
19.9 keys
12 DEC 2025 · 10:51 UTC
23.7 keys
19.8 keys
23 DEC 2025 · 19:10 UTC
24.1 keys
11.4 keys
29 DEC 2025 · 18:51 UTC
26.0 keys
20.3 keys
4 JAN 2026 · 18:48 UTC
23.1 keys
20.0 keys
22 JAN 2026 · 01:44 UTC
22.4 keys
17.9 keys
12 FEB 2026 · 18:40 UTC
21.5 keys
17.7 keys
15 FEB 2026 · 22:40 UTC
23.8 keys
19.2 keys
1 MAR 2026 · 00:41 UTC
21.5 keys
18.6 keys
8 MAR 2026 · 22:42 UTC
21.3 keys
18.8 keys
15 MAR 2026 · 22:07 UTC
21.0 keys
19.0 keys
3 APR 2026 · 06:30 UTC
23.5 keys
11.4 keys
8 APR 2026 · 00:30 UTC
23.5 keys
14.1 keys
15 APR 2026 · 08:31 UTC
22.5 keys
18.7 keys
29 APR 2026 · 20:29 UTC
20.3 keys
18.0 keys
9 MAY 2026 · 12:31 UTC
21.2 keys
19.0 keys
17 MAY 2026 · 20:33 UTC
21.1 keys
18.9 keys
24 MAY 2026 · 22:30 UTC
20.7 keys
18.8 keys
8 JUN 2026 · 06:30 UTC
20.1 keys
18.0 keys
23 JUN 2026 · 01:14 UTC
21.5 keys
18.7 keys
29 JUN 2026 · 01:14 UTC
21.0 keys
18.3 keys
11 JUL 2026 · 06:43 UTC
20.9 keys
18.2 keys
22 JUL 2026 · 00:47 UTC
24.2 keys
21.0 keys
3 AUG 2026 · 00:24 UTC
25.1 keys
21.7 keys
21 AUG 2026 · 02:08 UTC
25.5 keys
22.2 keys
21 AUG 2026 · 14:08 UTC
25.5 keys
22.2 keys
22 AUG 2026 · 02:08 UTC
25.5 keys
22.2 keys
22 AUG 2026 · 20:08 UTC
25.5 keys
22.2 keys
23 AUG 2026 · 22:08 UTC
25.6 keys
22.2 keys
24 AUG 2026 · 12:09 UTC
25.5 keys
22.2 keys
25 AUG 2026 · 02:08 UTC
25.5 keys
22.2 keys
28 AUG 2026 · 18:09 UTC
25.5 keys
22.2 keys
30 AUG 2026 · 22:09 UTC
25.5 keys
22.2 keys
Price history in numbers
52 readings since 25 Sep 2025
Over the last 30 days the Kill-a-Watt Cotton Head's sell price ranged from 25.4 keys to 25.6 keys and is up 0.3% after 11 moves. Over a year it ranged from 20.0 keys to 31.0 keys (down 17.6%). Today's 25.5 keys sits in the middle of its range: the lowest we have recorded is 20.0 keys (2 May 2026) and the highest 31.0 keys (25 Sep 2025). The price has moved 50 times since we began recording it — about once every 7 days.