Community price on backpack.tf: 23.0–26.0 keys, last changed 2018-08-21 (8.0y ago). The live quote above, 18.9 keys, is 18% lower and last moved 3h 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: $60.03 — the lowest of one listing for the Kill-a-Watt effect when we looked on 2026-09-03 01:25 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 18 keys, 54.55 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 Greased Lightning”, with no effect in the name — the effect comes from the individual listing.
Price history
53 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 Greased Lightning sell price, 2025-09-25 to 2026-09-05: 53 observations, from 26.3 keys to 18.9 keys. Sampled evenly across the range.
Observed (UTC)
Sell
Buy
25 SEP 2025 · 03:29 UTC
26.3 keys
19.9 keys
30 SEP 2025 · 21:18 UTC
27.3 keys
19.9 keys
19 OCT 2025 · 20:48 UTC
24.9 keys
19.9 keys
25 OCT 2025 · 17:11 UTC
23.7 keys
19.0 keys
10 NOV 2025 · 01:12 UTC
27.0 keys
21.6 keys
22 DEC 2025 · 03:09 UTC
25.5 keys
21.3 keys
2 JAN 2026 · 08:47 UTC
22.5 keys
18.9 keys
18 JAN 2026 · 02:11 UTC
22.8 keys
19.1 keys
3 FEB 2026 · 00:22 UTC
21.1 keys
18.0 keys
10 FEB 2026 · 06:42 UTC
20.6 keys
17.6 keys
15 FEB 2026 · 22:40 UTC
22.0 keys
18.1 keys
3 MAR 2026 · 06:42 UTC
20.6 keys
13.7 keys
8 MAR 2026 · 22:42 UTC
20.0 keys
17.0 keys
15 MAR 2026 · 22:07 UTC
19.7 keys
17.1 keys
1 APR 2026 · 00:30 UTC
21.7 keys
19.5 keys
12 APR 2026 · 22:30 UTC
21.3 keys
16.2 keys
19 APR 2026 · 22:31 UTC
21.7 keys
18.3 keys
3 MAY 2026 · 22:31 UTC
19.8 keys
18.0 keys
10 MAY 2026 · 22:32 UTC
21.0 keys
19.4 keys
17 MAY 2026 · 22:31 UTC
20.9 keys
19.6 keys
1 JUN 2026 · 00:30 UTC
21.1 keys
20.3 keys
8 JUN 2026 · 00:31 UTC
20.8 keys
20.3 keys
15 JUN 2026 · 00:31 UTC
20.6 keys
20.5 keys
29 JUN 2026 · 01:14 UTC
17.7 keys
15.4 keys
5 JUL 2026 · 23:12 UTC
17.2 keys
14.9 keys
12 JUL 2026 · 20:45 UTC
17.3 keys
15.0 keys
29 JUL 2026 · 02:45 UTC
18.8 keys
16.3 keys
3 AUG 2026 · 02:24 UTC
20.1 keys
17.5 keys
10 AUG 2026 · 13:10 UTC
20.5 keys
17.8 keys
21 AUG 2026 · 14:08 UTC
19.5 keys
17.0 keys
21 AUG 2026 · 18:09 UTC
17.1 keys
14.9 keys
21 AUG 2026 · 22:09 UTC
17.1 keys
14.9 keys
22 AUG 2026 · 06:08 UTC
18.5 keys
16.1 keys
22 AUG 2026 · 08:08 UTC
18.5 keys
16.1 keys
22 AUG 2026 · 10:09 UTC
17.2 keys
15.0 keys
22 AUG 2026 · 14:08 UTC
17.1 keys
14.9 keys
22 AUG 2026 · 18:09 UTC
18.5 keys
16.1 keys
23 AUG 2026 · 22:08 UTC
16.6 keys
14.5 keys
4 SEP 2026 · 04:08 UTC
18.7 keys
16.3 keys
5 SEP 2026 · 16:08 UTC
18.9 keys
16.4 keys
Price history in numbers
53 readings since 25 Sep 2025
Over the last 30 days the Kill-a-Watt Greased Lightning's sell price ranged from 14.4 keys to 20.5 keys and is down 8.0% after 14 moves. Over a year it ranged from 14.4 keys to 27.3 keys (down 28.4%). Today's 18.9 keys sits in the middle of its range: the lowest we have recorded is 14.4 keys (26 Aug 2026) and the highest 27.3 keys (30 Sep 2025). The price has moved 51 times since we began recording it — about once every 7 days.