Community price on backpack.tf: 11.0–15.0 keys, last changed 2023-10-16 (2.9y ago). The live quote above, 9.55 keys, is 13% lower and last moved 12h 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: $33.57 — the lowest of one listing for the Kill-a-Watt effect when we looked on 2026-09-03 01:29 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 9 keys, 34.33 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 Birdcage”, with no effect in the name — the effect comes from the individual listing.
Price history
63 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 Birdcage sell price, 2025-09-25 to 2026-09-05: 63 observations, from 16.5 keys to 9.55 keys. Sampled evenly across the range.
Observed (UTC)
Sell
Buy
25 SEP 2025 · 03:29 UTC
16.5 keys
10.1 keys
9 OCT 2025 · 08:18 UTC
15.8 keys
9.70 keys
19 OCT 2025 · 20:05 UTC
15.0 keys
9.27 keys
10 NOV 2025 · 00:26 UTC
15.2 keys
9.35 keys
26 NOV 2025 · 12:51 UTC
10.2 keys
8.84 keys
10 DEC 2025 · 10:44 UTC
13.7 keys
8.99 keys
22 DEC 2025 · 01:06 UTC
12.9 keys
7.78 keys
1 JAN 2026 · 02:49 UTC
10.8 keys
8.60 keys
19 JAN 2026 · 05:15 UTC
9.95 keys
7.47 keys
25 JAN 2026 · 15:43 UTC
9.84 keys
7.89 keys
10 FEB 2026 · 10:40 UTC
8.71 keys
7.47 keys
18 FEB 2026 · 00:39 UTC
9.79 keys
8.09 keys
1 MAR 2026 · 00:41 UTC
9.10 keys
7.00 keys
16 MAR 2026 · 18:07 UTC
8.53 keys
7.59 keys
23 MAR 2026 · 20:06 UTC
9.59 keys
7.56 keys
15 APR 2026 · 06:30 UTC
9.84 keys
6.78 keys
26 APR 2026 · 22:31 UTC
8.52 keys
7.41 keys
9 MAY 2026 · 14:30 UTC
8.89 keys
7.21 keys
3 JUN 2026 · 20:30 UTC
8.92 keys
5.94 keys
8 JUN 2026 · 00:30 UTC
8.81 keys
7.15 keys
23 JUN 2026 · 17:14 UTC
8.75 keys
7.61 keys
30 JUN 2026 · 21:12 UTC
9.05 keys
7.88 keys
21 JUL 2026 · 16:44 UTC
8.94 keys
7.78 keys
1 AUG 2026 · 06:43 UTC
10.1 keys
8.80 keys
13 AUG 2026 · 03:12 UTC
10.1 keys
8.85 keys
24 AUG 2026 · 16:08 UTC
8.86 keys
7.71 keys
24 AUG 2026 · 18:09 UTC
8.89 keys
7.73 keys
25 AUG 2026 · 00:08 UTC
9.00 keys
7.82 keys
25 AUG 2026 · 10:09 UTC
9.04 keys
7.87 keys
25 AUG 2026 · 12:08 UTC
9.03 keys
7.85 keys
25 AUG 2026 · 20:09 UTC
9.06 keys
7.88 keys
25 AUG 2026 · 22:09 UTC
9.07 keys
7.89 keys
28 AUG 2026 · 14:10 UTC
9.33 keys
8.11 keys
29 AUG 2026 · 04:09 UTC
9.37 keys
8.14 keys
30 AUG 2026 · 12:08 UTC
9.71 keys
8.42 keys
31 AUG 2026 · 12:09 UTC
9.66 keys
8.40 keys
1 SEP 2026 · 00:08 UTC
9.62 keys
8.36 keys
2 SEP 2026 · 00:08 UTC
9.49 keys
8.25 keys
2 SEP 2026 · 20:08 UTC
9.55 keys
8.30 keys
5 SEP 2026 · 08:08 UTC
9.55 keys
8.30 keys
Price history in numbers
63 readings since 25 Sep 2025
Over the last 30 days the Kill-a-Watt Birdcage's sell price ranged from 8.44 keys to 10.1 keys and is down 5.9% after 24 moves. Over a year it ranged from 8.24 keys to 16.5 keys (down 42.0%). Today's 9.55 keys sits in the lower third of its range: the lowest we have recorded is 8.24 keys (15 Jun 2026) and the highest 16.5 keys (30 Sep 2025). The price has moved 62 times since we began recording it — about once every 6 days.
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