Kill-a-Watt Nightcap

✦ Kill-a-WattUnusual1mo ago

This price has not changed since 2026-09-23 16:08 UTC. It reflects the last observed trade rather than current market value, and this page is excluded from our sitemap for that reason.

Sell price

12 keys, 1.33 ref

Buy price

10 keys, 29 ref

In keys

12.0 keys

In USD

$26.09 at the Steam key rate

Steam Market asking price

$40.01 asking, not sold · 2 listed

Community price on backpack.tf: 16.0 keys, last changed 2025-07-29 (1.3y ago). The live quote above, 12.0 keys, is 25% lower 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.

Steam Market asking price: $40.01 — the lowest of 2 listings for the Kill-a-Watt effect when we looked on 2026-10-31 01:45 UTC (5d 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 12 keys, 1.33 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 Nightcap”, with no effect in the name — the effect comes from the individual listing.

Price history

102 observations

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 Nightcap sell price, 2025-09-25 to 2026-10-28: 102 observations, from 16.1 keys to 11.5 keys. Sampled evenly across the range.
Observed (UTC)	Sell	Buy
25 SEP 2025 · 03:29 UTC	16.1 keys	13.2 keys
19 OCT 2025 · 22:30 UTC	14.6 keys	13.2 keys
2 NOV 2025 · 08:06 UTC	10.9 keys	8.19 keys
25 NOV 2025 · 20:58 UTC	12.3 keys	10.9 keys
8 DEC 2025 · 00:57 UTC	12.4 keys	9.59 keys
29 DEC 2025 · 08:55 UTC	12.5 keys	9.32 keys
18 JAN 2026 · 15:36 UTC	11.1 keys	9.31 keys
5 FEB 2026 · 12:25 UTC	10.4 keys	8.80 keys
22 FEB 2026 · 02:42 UTC	10.3 keys	8.69 keys
8 MAR 2026 · 20:44 UTC	9.72 keys	8.62 keys
1 APR 2026 · 00:31 UTC	10.5 keys	8.29 keys
19 APR 2026 · 20:32 UTC	10.6 keys	8.27 keys
10 MAY 2026 · 20:34 UTC	9.95 keys	9.20 keys
1 JUN 2026 · 04:32 UTC	9.99 keys	7.66 keys
15 JUN 2026 · 22:11 UTC	9.83 keys	7.81 keys
5 JUL 2026 · 19:12 UTC	9.28 keys	8.06 keys
19 JUL 2026 · 22:44 UTC	9.07 keys	7.90 keys
12 AUG 2026 · 07:11 UTC	11.4 keys	9.82 keys
24 AUG 2026 · 14:09 UTC	10.4 keys	9.07 keys
25 AUG 2026 · 14:09 UTC	10.8 keys	9.40 keys
28 AUG 2026 · 12:08 UTC	11.0 keys	9.57 keys
29 AUG 2026 · 16:09 UTC	11.1 keys	9.61 keys
31 AUG 2026 · 04:10 UTC	11.1 keys	9.62 keys
1 SEP 2026 · 16:09 UTC	11.1 keys	9.64 keys
2 SEP 2026 · 18:10 UTC	11.0 keys	9.62 keys
5 SEP 2026 · 14:09 UTC	10.5 keys	9.15 keys
6 SEP 2026 · 10:09 UTC	10.9 keys	9.46 keys
6 SEP 2026 · 22:09 UTC	10.8 keys	9.39 keys
8 SEP 2026 · 00:08 UTC	10.9 keys	9.48 keys
9 SEP 2026 · 02:09 UTC	11.7 keys	10.2 keys
23 SEP 2026 · 08:11 UTC	11.7 keys	10.2 keys
23 SEP 2026 · 16:08 UTC	12.0 keys	10.5 keys
12 OCT 2026 · 05:09 UTC	11.2 keys	9.72 keys
13 OCT 2026 · 23:08 UTC	10.0 keys	8.74 keys
18 OCT 2026 · 05:08 UTC	10.2 keys	8.91 keys
20 OCT 2026 · 15:12 UTC	11.5 keys	10.0 keys
20 OCT 2026 · 21:12 UTC	11.6 keys	9.89 keys
22 OCT 2026 · 15:12 UTC	11.6 keys	9.53 keys
24 OCT 2026 · 22:32 UTC	11.6 keys	11.2 keys
28 OCT 2026 · 09:11 UTC	11.5 keys	11.5 keys

Price history in numbers

102 readings since 25 Sep 2025

Over the last 30 days the Kill-a-Watt Nightcap's sell price ranged from 10.0 keys to 11.6 keys and is up 4.8% after 19 moves. Over a year it ranged from 7.70 keys to 12.8 keys (down 7.1%). Today's 11.5 keys sits in the middle of its range: the lowest we have recorded is 7.70 keys (29 Jun 2026) and the highest 16.1 keys (30 Sep 2025). The price has moved 101 times since we began recording it — about once every 4 days.

Window	Low	High	Change	Moves	Readings
30 days	10.0 keys	11.6 keys	+4.8%	19	20
90 days	10.0 keys	12.3 keys	+1.4%	57	58
a year	7.70 keys	12.8 keys	−7.1%	95	96

Details

SKU	31422;5;u56
Last price change	2026-09-23 16:08 UTC
Key rate when recorded	63.56 ref

Same effect, other items

the effect across the catalogue

Item	Value	Updated
Kill-a-Watt Antlers	1,111 keys	12mo ago
Kill-a-Watt Virtual Viewfinder	1,100 keys	12mo ago
Kill-a-Watt Polar Pullover	1,100 keys	12mo ago
Kill-a-Watt Exquisite Rack	760 keys	1mo ago
Kill-a-Watt Head Prize	387 keys	1mo ago
Kill-a-Watt Blighted Beak	303 keys	1mo ago
Kill-a-Watt Brainiac Hairpiece	283 keys	1mo ago
Kill-a-Watt Legendary Lid	283 keys	1mo ago
Kill-a-Watt Decorated Veteran	261 keys	1mo ago
Kill-a-Watt Bonk Boy	265 keys	1mo ago

Other effects on the Nightcap

same item, different effect

Item	Value	Updated
Scorching Flames Nightcap	78.3 keys	1mo ago
Distant Drift Nightcap	70.2 keys	1mo ago
Burning Flames Nightcap	51.7 keys	1mo ago
Purple Energy Nightcap	50.8 keys	1mo ago
Sunbeams Nightcap	50.9 keys	1mo ago
Prettiest Star Nightcap	36.2 keys	1mo ago
Knight's Prideful Spirit Nightcap	35.6 keys	1mo ago
Green Energy Nightcap	33.7 keys	1mo ago
Shining Bokeh Nightcap	30.2 keys	1mo ago
Ghosts of Smissmas Time Nightcap	29.1 keys	1mo ago

Priced similarly

across the catalogue

Item	Value	Updated
Vivid Plasma Plumber's Pipe	12.4 keys	1mo ago
Jellyfish Field Roaming Roman	11.9 keys	3mo ago
Circling TF Logo Conquistador	12.1 keys	1mo ago
Kill-a-Watt Burning Bandana	12.1 keys	1mo ago
Flying Lights Throttlehead	12.1 keys	1mo ago
Disco Beat Down Bonk Leadwear	12.1 keys	1mo ago
Steaming Heavy Duty Rag	12.1 keys	1mo ago
Psycho-Delic Commonwealth Commando	12.1 keys	1mo ago